LT1930ES5#PBF
更新时间:2024-09-18 13:01:20
品牌:Linear
描述:LT1930 - 1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters in ThinSOT; Package: SOT; Pins: 5; Temperature Range: -40°C to 85°C
LT1930ES5#PBF 概述
LT1930 - 1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters in ThinSOT; Package: SOT; Pins: 5; Temperature Range: -40°C to 85°C DC/DC转换器 开关式稳压器或控制器
LT1930ES5#PBF 规格参数
是否Rohs认证: | 符合 | 生命周期: | Transferred |
零件包装代码: | SOT | 包装说明: | VSSOP, TSOP5/6,.11,37 |
针数: | 5 | Reach Compliance Code: | compliant |
ECCN代码: | EAR99 | HTS代码: | 8542.39.00.01 |
风险等级: | 7.5 | Is Samacsys: | N |
模拟集成电路 - 其他类型: | SWITCHING REGULATOR | 控制模式: | CURRENT-MODE |
控制技术: | PULSE WIDTH MODULATION | 最大输入电压: | 16 V |
最小输入电压: | 2.6 V | 标称输入电压: | 3 V |
JESD-30 代码: | R-PDSO-G5 | JESD-609代码: | e3 |
长度: | 2.95 mm | 湿度敏感等级: | 1 |
功能数量: | 1 | 端子数量: | 5 |
最高工作温度: | 70 °C | 最低工作温度: | |
最大输出电流: | 2 A | 封装主体材料: | PLASTIC/EPOXY |
封装代码: | VSSOP | 封装等效代码: | TSOP5/6,.11,37 |
封装形状: | RECTANGULAR | 封装形式: | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
峰值回流温度(摄氏度): | 260 | 认证状态: | Not Qualified |
座面最大高度: | 1 mm | 子类别: | Switching Regulator or Controllers |
表面贴装: | YES | 切换器配置: | BOOST |
最大切换频率: | 1600 kHz | 技术: | BIPOLAR |
温度等级: | COMMERCIAL | 端子面层: | Matte Tin (Sn) |
端子形式: | GULL WING | 端子节距: | 0.95 mm |
端子位置: | DUAL | 处于峰值回流温度下的最长时间: | 30 |
宽度: | 1.625 mm | Base Number Matches: | 1 |
LT1930ES5#PBF 数据手册
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PDF下载LT1930/LT1930A
1A, 1.2MHz/2.2MHz,
Step-Up DC/DC Converters
in ThinSOT
U
FEATURES
DESCRIPTIO
The LT®1930 and LT1930A are the industry’s highest
power SOT-23 switching regulators. Both include an
internal1A,36Vswitchallowinghighcurrentoutputstobe
generated in a small footprint. The LT1930 switches at
1.2MHz, allowing the use of tiny, low cost and low height
capacitors and inductors. The faster LT1930A switches at
2.2MHz, enabling further reductions in inductor size.
Complete regulator solutions approaching one tenth of a
square inch in area are achievable with these devices.
Multiple output power supplies can now use a separate
regulator for each output voltage, replacing cumbersome
quasi-regulated approaches using a single regulator and
custom transformers.
■
1.2MHz Switching Frequency (LT1930)
■
2.2MHz Switching Frequency (LT1930A)
■
Low VCESAT Switch: 400mV at 1A
■
High Output Voltage: Up to 34V
■
5V at 480mA from 3.3V Input (LT1930)
■
12V at 250mA from 5V Input (LT1930A)
■
Wide Input Range: 2.6V to 16V
■
Uses Small Surface Mount Components
■
Low Shutdown Current: <1µA
Low Profile (1mm) ThinSOTTM Package
■
■
Pin-for-Pin Compatible with the LT1613
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APPLICATIO S
Aconstantfrequencyinternallycompensatedcurrentmode
PWM architecture results in low, predictable output noise
that is easy to filter. Low ESR ceramic capacitors can be
used at the output, further reducing noise to the millivolt
level. The high voltage switch on the LT1930/LT1930A is
rated at 36V, making the device ideal for boost converters
up to 34V as well as for single-ended primary inductance
converter (SEPIC) and flyback designs. The LT1930 can
generate 5V at up to 480mA from a 3.3V supply or 5V at
300mA from four alkaline cells in a SEPIC design.
■
TFT-LCD Bias Supply
■
Digital Cameras
■
Cordless Phones
Battery Backup
Medical Diagnostic Equipment
Local 5V or 12V Supply
External Modems
PC Cards
xDSL Power Supply
■
■
■
■
■
■
, LTC and LT are registered trademarks of Linear Technology Corporation
ThinSOT is a trademark of Linear Technology Corporation.
The LT1930/LT1930A are available in the 5-lead ThinSOT
package.
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TYPICAL APPLICATIO
Efficiency
L1
90
D1
V
= 5V
10µH
IN
V
OUT
V
IN
12V
85
80
75
70
65
60
55
50
5V
300mA
V
= 3.3V
IN
5
1
R1
113k
V
SW
C1
IN
C3*
10pF
2.2µF
LT1930
SHDN
C2
4.7µF
4
3
SHDN
FB
R2
13.3k
GND
2
C1: TAIYO-YUDEN X5R LMK212BJ225MG
C2: TAIYO-YUDEN X5R EMK316BJ475ML
D1: ON SEMICONDUCTOR MBR0520
L1: SUMIDA CR43-100
1930/A F01
200
LOAD CURRENT (mA)
0
100
300
400
*OPTIONAL
Figure 1. 5V to 12V, 300mA Step-Up DC/DC Converter
1930 TA01
1
LT1930/LT1930A
W W U W
U W
U
ABSOLUTE AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
ORDER PART
NUMBER
VIN Voltage .............................................................. 16V
SW Voltage ................................................–0.4V to 36V
FB Voltage .............................................................. 2.5V
Current Into FB Pin .............................................. ±1mA
SHDN Voltage ......................................................... 10V
Maximum Junction Temperature ......................... 125°C
Operating Temperature Range (Note 2) .. –40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
TOP VIEW
LT1930ES5
LT1930AES5
SW 1
GND 2
FB 3
5 V
IN
4 SHDN
S5 PART MARKING
S5 PACKAGE
5-LEAD PLASTIC SOT-23
LTKS
LTSQ
TJMAX = 125°C, θJA = 256°C/ W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.
VIN = 3V, VSHDN = VIN unless otherwise noted. (Note 2)
LT1930
TYP
LT1930A
TYP
PARAMETER
CONDITIONS
MIN
MAX
2.6
MIN
MAX
2.6
UNITS
Minimum Operating Voltage
Maximum Operating Voltage
Feedback Voltage
2.45
2.45
V
V
16
16
1.240
1.230
1.255
1.270
1.280
1.240
1.230
1.255
1.270
1.280
V
V
●
●
FB Pin Bias Current
V
V
V
= 1.255V
120
4.2
360
6
240
5.5
720
8
nA
mA
µA
FB
Quiescent Current
= 2.4V, Not Switching
SHDN
SHDN
Quiescent Current in Shutdown
Reference Line Regulation
Switching Frequency
= 0V, V = 3V
0.01
0.01
1.2
1
0.01
0.01
2.2
1
IN
2.6V ≤ V ≤ 16V
0.05
0.05
%/V
IN
1
0.85
1.4
1.6
1.8
1.6
2.6
2.9
MHz
MHz
●
●
Maximum Duty Cycle
Switch Current Limit
84
1
90
1.2
75
1
90
1.2
%
A
(Note 3)
2
600
1
2.5
600
1
Switch V
I
= 1A
= 5V
400
0.01
400
0.01
mV
µA
V
CESAT
SW
Switch Leakage Current
SHDN Input Voltage High
SHDN Input Voltage Low
SHDN Pin Bias Current
V
SW
2.4
2.4
0.5
0.5
V
V
V
= 3V
= 0V
16
0
32
0.1
35
0
70
0.1
µA
µA
SHDN
SHDN
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 2: The LT1930E/LT1930AE are guaranteed to meet performance
specifications from 0°C to 70°C. Specifications over the –40°C to 85°C
Note 3: Current limit guaranteed by design and/or correlation to static test.
2
LT1930/LT1930A
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Quiescent Current
FB Pin Voltage
SHDN Pin Current
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
1.28
1.27
1.26
1.25
1.24
1.23
1.22
90
80
70
60
50
40
30
20
10
0
NOT SWITCHING
LT1930A
LT1930A
LT1930
LT1930
–10
–50
0
25
50
75
100
–25
–50 –25
0
25
100
0
1
2
4
5
6
50
75
3
TEMPERATURE (°C)
TEMPERATURE (°C)
SHDN PIN VOLTAGE (V)
1930/A G02
1930/A G01
1930/A G03
Current Limit
Oscillator Frequency
Switch Saturation Voltage
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
2.5
2.3
2.1
1.9
1.7
1.5
1.3
1.1
0.9
0.7
0.5
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
LT1930A
LT1930
0
10 20 30 40 50 60 70 80 90
–50
–25
0
25
50
75
100
0
0.2
0.4
SWITCH CURRENT (A)
1.0
1.2
0.6
0.8
TEMPERATURE (°C)
DUTY CYCLE (%)
1930/A G04
1930/A G06
1930/A G05
U
U
U
PI FU CTIO S
SW (Pin 1): Switch Pin. Connect inductor/diode here.
Minimize trace area at this pin to reduce EMI.
SHDN(Pin4):ShutdownPin.Tieto2.4Vormoretoenable
device. Ground to shut down.
GND (Pin 2): Ground. Tie directly to local ground plane.
VIN (Pin 5): Input Supply Pin. Must be locally bypassed.
FB (Pin 3): Feedback Pin. Reference voltage is 1.255V.
Connect resistive divider tap here. Minimize trace area at
FB. Set VOUT according to VOUT = 1.255V(1 + R1/R2).
3
LT1930/LT1930A
W
BLOCK DIAGRA
1
SW
1.255V
REFERENCE
V
IN
+
–
5
COMPARATOR
A2
–
+
A1
DRIVER
Q1
R
Q
R
C
S
V
OUT
C
C
+
–
R1 (EXTERNAL)
0.01Ω
Σ
FB
R2 (EXTERNAL)
RAMP
GENERATOR
SHUTDOWN
4
SHDN
3
FB
2
GND
1930/A BD
1.2MHz
OSCILLATOR*
*2.2MHz FOR LT1930A
Figure 2. Block Diagram
U
OPERATIO
The LT1930 uses a constant frequency, current-mode
control scheme to provide excellent line and load regula-
tion. Operation can be best understood by referring to the
block diagram in Figure 2. At the start of each oscillator
cycle, the SR latch is set, which turns on the power switch
Q1. A voltage proportional to the switch current is added
to a stabilizing ramp and the resulting sum is fed into the
positive terminal of the PWM comparator A2. When this
voltageexceedsthelevelatthenegativeinputofA2,theSR
latch is reset turning off the power switch. The level at the
negative input of A2 is set by the error amplifier A1, and is
simply an amplified version of the difference between the
feedback voltage and the reference voltage of 1.255V. In
this manner, the error amplifier sets the correct peak
current level to keep the output in regulation. If the error
amplifier’s output increases, more current is delivered to
the output; if it decreases, less current is delivered. The
LT1930 has a current limit circuit not shown in Figure 2.
The switch current is constantly monitored and not al-
lowed to exceed the maximum switch current (typically
1.2A). Iftheswitchcurrentreachesthisvalue, theSRlatch
is reset regardless of the state of comparator A2. This
current limit helps protect the power switch as well as the
external components connected to the LT1930.
The block diagram for the LT1930A (not shown) is iden-
tical except that the oscillator frequency is 2.2MHz.
4
LT1930/LT1930A
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APPLICATIONS INFORMATION
LT1930 AND LT1930A DIFFERENCES
iron types. Choose an inductor that can handle at least 1A
without saturating, and ensure that the inductor has a low
DCR(copper-wireresistance)tominimizeI2Rpowerlosses.
A 4.7µH or 10µH inductor will be the best choice for most
LT1930 designs. For LT1930A designs, a 2.2µH to 4.7µH
inductor will usually suffice. Note that in some applica-
tions, the current handling requirements of the inductor
can be lower, such as in the SEPIC topology where each
inductor only carries one-half of the total switch current.
Switching Frequency
The key difference between the LT1930 and LT1930A is
thefasterswitchingfrequencyoftheLT1930A.At2.2MHz,
the LT1930A switches at nearly twice the rate of the
LT1930. Care must be taken in deciding which part to use.
The high switching frequency of the LT1930A allows
smaller cheaper inductors and capacitors to be used in a
given application, but with a slight decrease in efficiency
and maximum output current when compared to the
LT1930. Generally, if efficiency and maximum output
current are critical, the LT1930 should be used. If applica-
tion size and cost are more important, the LT1930A will be
the better choice. In many applications, tiny inexpensive
chip inductors can be used with the LT1930A, reducing
solution cost.
Table 1. Recommended Inductors – LT1930
MAX
DCR
(µH) mΩ
SIZE
L × W × H
(mm)
L
PART
VENDOR
CDRH5D18-4R1
CDRH5D18-100
CR43-4R7
4.1
10
4.7
57
124
4.5 × 4.7 × 2.0 Sumida
(847) 956-0666
109 3.2 × 2.5 × 2.0 www.sumida.com
CR43-100
10
182
DS1608-472
DS1608-103
4.7
10
60
75
4.5 × 6.6 × 2.9 Coilcraft
(847) 639-6400
www.coilcraft.com
Duty Cycle
ELT5KT4R7M
ELT5KT6R8M
4.7
6.8
240 5.2 × 5.2 × 1.1 Panasonic
360 (408) 945-5660
The maximum duty cycle (DC) of the LT1930A is 75%
compared to 84% for the LT1930. The duty cycle for a
given application using the boost topology is given by:
www.panasonic.com
Table 2. Recommended Inductors – LT1930A
|VOUT | – |V |
IN
MAX
DCR
SIZE
L × W × H
(mm)
DC =
L
|VOUT
|
PART
(µH) mΩ
VENDOR
Fora5Vto12Vapplication,theDCis58.3%indicatingthat
the LT1930A could be used. A 5V to 24V application has
a DC of 79.2% making the LT1930 the right choice. The
LT1930A can still be used in applications where the DC, as
calculated above, is above 75%. However, the part must
beoperatedinthediscontinuousconductionmodesothat
the actual duty cycle is reduced.
LQH3C2R2M24
LQH3C4R7M24
2.2
4.7
126 3.2 × 2.5 × 2.0 Murata
195
(404) 573-4150
www.murata.com
4.5 × 4.0 × 3.0 Sumida
CR43-2R2
CR43-3R3
2.2
3.3
71
86
(847) 956-0666
www.sumida.com
1008PS-272
1008PS-332
2.7
3.3
100 3.7 × 3.7 × 2.6 Coilcraft
110 (800) 322-2645
www.coilcraft.com
204 5.2 × 5.2 × 1.1 Panasonic
(408) 945-5660
www.panasonic.com
ELT5KT3R3M
3.3
INDUCTOR SELECTION
Several inductors that work well with the LT1930 are listed
in Table 1 and those for the LT1930A are listed in Table 2.
These tables are not complete, and there are many other
manufacturers and devices that can be used. Consult each
manufacturer for more detailed information and for their
entireselectionofrelatedparts,asmanydifferentsizesand
shapes are available. Ferrite core inductors should be used
to obtain the best efficiency, as core losses at 1.2MHz are
much lower for ferrite cores than for cheaper powdered-
The inductors shown in Table 2 for use with the LT1930A
were chosen for small size. For better efficiency, use
similar valued inductors with a larger volume. For
example, the Sumida CR43 series in values ranging from
2.2µH to 4.7µH will give an LT1930A application a few
percentage points increase in efficiency, compared to the
smaller Murata LQH3C Series.
5
LT1930/LT1930A
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APPLICATIONS INFORMATION
CAPACITOR SELECTION
By choosing the appropriate values for the resistor and
capacitor, the zero frequency can be designed to improve
the phase margin of the overall converter. The typical
target value for the zero frequency is between 35kHz to
55kHz. Figure 3 shows the transient response of the step-
up converter from Figure 1 without the phase lead capaci-
torC3. Thephasemarginisreducedasevidencedbymore
ringing in both the output voltage and inductor current. A
10pF capacitor for C3 results in better phase margin,
which is revealed in Figure 4 as a more damped response
andlessovershoot. Figure5showsthetransientresponse
when a 33µF tantalum capacitor with no phase lead
capacitor is used on the output. The higher output voltage
ripple is revealed in the upper waveform as a set of double
lines. The transient response is not greatly improved
which implies that the ESR zero frequency is too high to
increase the phase margin.
Low ESR (equivalent series resistance) capacitors should
beusedattheoutputtominimizetheoutputripplevoltage.
Multi-layer ceramic capacitors are an excellent choice, as
they have extremely low ESR and are available in very
small packages. X5R dielectrics are preferred, followed by
X7R, as these materials retain the capacitance over wide
voltage and temperature ranges. A 4.7µF to 10µF output
capacitor is sufficient for most applications, but systems
withverylowoutputcurrentsmayneedonlya1µFor2.2µF
outputcapacitor. SolidtantalumorOSCONcapacitorscan
be used, but they will occupy more board area than a
ceramicandwillhaveahigherESR.Alwaysuseacapacitor
with a sufficient voltage rating.
Ceramic capacitors also make a good choice for the input
decoupling capacitor, which should be placed as close as
possible to the LT1930/LT1930A. A 1µF to 4.7µF input
capacitorissufficientformostapplications.Table3shows
a list of several ceramic capacitor manufacturers. Consult
the manufacturers for detailed information on their entire
selection of ceramic parts.
VOUT
0.2V/DIV
AC COUPLED
ILI
0.5A/DIV
AC COUPLED
Table 3. Ceramic Capacitor Manufacturers
Taiyo Yuden
AVX
(408) 573-4150
(803) 448-9411
(714) 852-2001
www.t-yuden.com
www.avxcorp.com
www.murata.com
250mA
LOAD
CURRENT
150mA
50µs/DIV
1930 F03
Murata
Figure 3. Transient Response of Figure 1's Step-Up
Converter without Phase Lead Capacitor
ThedecisiontouseeitherlowESR(ceramic)capacitorsor
the higher ESR (tantalum or OSCON) capacitors can affect
the stability of the overall system. The ESR of any capaci-
tor, along with the capacitance itself, contributes a zero to
the system. For the tantalum and OSCON capacitors, this
zero is located at a lower frequency due to the higher value
of the ESR, while the zero of a ceramic capacitor is at a
much higher frequency and can generally be ignored.
VOUT
0.2V/DIV
AC COUPLED
ILI
0.5A/DIV
AC COUPLED
250mA
150mA
LOAD
CURRENT
A phase lead zero can be intentionally introduced by
placing a capacitor (C3) in parallel with the resistor (R1)
betweenVOUT andVFB asshowninFigure1.Thefrequency
of the zero is determined by the following equation.
50µs/DIV
1930 F04
Figure 4. Transient Response of Figure 1's Step-Up
Converter with 10pF Phase Lead Capacitor
1
ƒZ =
2π •R1•C3
6
LT1930/LT1930A
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APPLICATIONS INFORMATION
LAYOUT HINTS
VOUT
0.2V/DIV
AC COUPLED
The high speed operation of the LT1930/LT1930A
demandscarefulattentiontoboardlayout. Youwillnotget
advertised performance with careless layout. Figure 6
shows the recommended component placement.
ILI
0.5A/DIV
AC COUPLED
LOAD
250mA
CURRENT 150mA
200µs/DIV
1930 F04
Figure 5. Transient Response of Step-Up Converter with 33µF
Tantalum Output Capacitor and No Phase Lead Capacitor
L1
D1
C1
V
V
IN
OUT
DIODE SELECTION
+
C2
SHUTDOWN
ASchottkydiodeisrecommendedforusewiththeLT1930/
LT1930A. The Motorola MBR0520 is a very good choice.
Where the switch voltage exceeds 20V, use the MBR0530
(a 30V diode). Where the switch voltage exceeds 30V, use
the MBR0540 (a 40V diode). These diodes are rated to
handle an average forward current of 0.5A. In applications
where the average forward current of the diode exceeds
0.5A, a Microsemi UPS5817 rated at 1A is recommended.
R2
R1
C3
GND
1930 F06
Figure 6. Suggested Layout
Driving SHDN Above 10V
The maximum voltage allowed on the SHDN pin is 10V. If
you wish to use a higher voltage, you must place a resistor
in series with SHDN. A good value is 121k. Figure 7 shows
a circuit where VIN = 16V and SHDN is obtained from VIN.
The voltage on the SHDN pin is kept below 10V.
SETTING OUTPUT VOLTAGE
To set the output voltage, select the values of R1 and R2
(see Figure 1) according to the following equation.
VOUT
1.255V
R1= R2
– 1
A good value for R2 is 13.3k which sets the current in the
resistor divider chain to 1.255V/13.3k = 94.7µA.
D1
L1
V
IN
16V
V
OUT
5
1
V
SW
IN
R1
R2
121k
C1
LT1930
C2
4
3
SHDN
FB
GND
2
1930 F07
Figure 7. Keeping SHDN Below 10V
7
LT1930/LT1930A
U
TYPICAL APPLICATIO S
Efficiency
4-Cell to 5V SEPIC Converter
80
75
70
65
60
55
50
45
40
V
= 6.5V
IN
C3
1µF
L1
10µH
D1
V
IN
= 4V
V
4V TO 6.5V
OUT
5V
300mA
5
1
V
SW
C1
IN
2.2µF
243k
LT1930
SHDN
4-CELL
BATTERY
4
3
L2
10µH
C2
10µF
SHDN
FB
GND
2
82.5k
1930 TA02a
C1: TAIYO-YUDEN X5R LMK212BJ225MG
C2: TAIYO-YUDEN X5R JMK316BJ106ML
C3: TAIYO-YUDEN X5R LMK212BJ105MG
D1: ON SEMICONDUCTOR MBR0520
L1, L2: MURATA LQH3C100K24
200
LOAD CURRENT (mA)
0
100
300
400
500
1930 TA02b
4-Cell to 5V SEPIC Converter with Coupled Inductors
5V to 24V Boost Converter
C3
L1A
L1
1µF
D1
D1
10µH
V
10µH
V
4V TO 6.5V
OUT
•
OUT
V
IN
5V
5V
24V
300mA
5
1
90mA
5
1
V
SW
C1
V
SW
IN
C1
R1
665k
IN
2.2µF
4.7µF
•
243k
LT1930
LT1930
SHDN
4-CELL
BATTERY
C2
2.2µF
4
3
4
3
L1B
10µH
C2
10µF
SHDN
SHDN
FB
SHDN
FB
GND
2
R2
36.5k
GND
2
82.5k
C1: TAIYO-YUDEN X5R LMK212BJ225MG
C2: TAIYO-YUDEN X5R JMK316BJ106ML
C3: TAIYO-YUDEN X5R LMK212BJ105MG
D1: ON SEMICONDUCTOR MBR0520
L1: SUMIDA CLS62-100
C1: TAIYO-YUDEN X5R EMK316BJ475ML
C2: TAIYO-YUDEN X5R JMK212BJ475MG
D1: ON SEMICONDUCTOR MBR0530
L1: SUMIDA CR43-100
1930/A TA03
1930/A TA04
±15V Dual Output Converter with Output Disconnect
C4
1µF
L1
3.3µH
D1
V
15V
70mA
IN
5V
5
1
C5
1µF
V
SW
C1
R1
147k
IN
2.2µF
LT1930
D2
C2
2.2µF
4
3
OFF ON
SHDN
FB
R2
13.3k
GND
2
C6
2.2µF
C1: TAIYO-YUDEN X5R LMK212BJ225MG
C2, C3: TAIYO-YUDEN X5R EMK316BJ225ML
C4, C5: TAIYO-YUDEN X5R TMK316BJ105ML
(408) 573-4150
D3
D4
–15V
70mA
1930/A TA05
D1 TO D4: ON SEMICONDUCTOR MBR0520 (800) 282-9855
L1: SUMIDA CR43-3R3 (874) 956-0666
8
LT1930/LT1930A
U
TYPICAL APPLICATIO S
Boost Converter with Reverse Battery Protection
L1
4.7µH
D1
M1
V
V
OUT
IN
8V
3V to 6V
5
1
C1
2.2µF
C3
47pF
520mA AT V = 6V
240mA AT V = 3V
IN
IN
V
SW
IN
R1
60.4k
LT1930
4
3
C2
22µF
SHDN
SHDN
FB
R2
11.3k
GND
2
C1: TAIYO-YUDEN X5R LMK432BJ226MM
C2: TAIYO-YUDEN X5R LMK212BJ225MG
D1: ON SEMICONDUCTOR MBR0520
L1: SUMIDA CR43-4R7
1930/A TA06
M1: SILICONIX Si6433DQ
Efficiency
3.3V to 5V Boost Converter
90
85
80
75
L1
D1
5.6µH
V
= 3.3V
V
IN
OUT
V
IN
5V
3.3V
480mA
5
1
V
SW
C1
R1
V
= 2.6V
IN
IN
4.7µF
40.2k
LT1930
C2
10µF
4
3
70
65
OFF ON
SHDN
FB
R2
13.3k
GND
2
60
55
50
C1: TAIYO-YUDEN X5R JMK212BJ475MG www.t-yuden.com
C2: TAIYO-YUDEN X5R JMK316BJ106ML
D1: ON SEMICONDUCTOR MBR0520 www.onsemi.com
L1: SUMIDA CR43-5R6 www.sumida.com
1930/A TA07a
100
200
400
0
500
300
LOAD CURRENT (mA)
1930/A TA07b
5V to 12V, 250mA Step-Up Converter
Efficiency
90
85
80
75
L1
V
V
= 5V
OUT
IN
D1
2.2µH
= 12V
V
OUT
V
IN
12V
5V
250mA
5
1
V
SW
C1
IN
R1
2.2µF
115k
LT1930A
SHDN
C2
2.2µF
4
3
70
65
SHDN
FB
R2
13.3k
GND
2
60
55
50
C1: TAIYO-YUDEN X5R LMK212BJ225MG
C2: TAIYO-YUDEN X5R EMK316BJ225ML
D1: ON SEMICONDUCTOR MBR0520
L1: MURATA LQH3C2R2M24
1930/A TA08a
50
100
200
0
250
300
150
LOAD CURRENT (mA)
1930/A TA08b
9
LT1930/LT1930A
U
TYPICAL APPLICATIO S
9V, 18V, –9V Triple Output TFT-LCD Bias Supply with Soft-Start
D1
D2
C3
18V
10mA
C4
0.1µF
1µF
Start-Up Waveforms
L1
4.7µH
D5
V
9V
200mA
IN
3.3V
9V OUTPUT
5V/DIV
5
1
R1
124k
+
V
SW
IN
C1
2.2µF
R
LT1930
SS
30k
C5
10µF
–9V OUTPUT
5V/DIV
4
3
V
SHDN
FB
SS
D
SS
3.3V
GND
2
1N4148
R2
20k
18V OUTPUT
10V/DIV
0V
C2
0.1µF
C
SS
68nF
C1: X5R OR X7R, 6.3V
C2,C3, C5: X5R OR X7R, 10V
C4: X5R OR X7R, 25V
D1- D4: BAT54S OR EQUIVALENT
D5: MBR0520 OR EQUIVALENT
L1: PANASONIC ELT5KT4R7M
D4
D3
I
L1 0.5A/DIV
2ms/DIV
C6
1µF
–9V
10mA
1930/A TA11a
8V, 23V, –8V Triple Output TFT-LCD Bias Supply with Soft-Start
D1
D2
D3
D4
23V
10mA
C3
0.1µF
C4
0.1µF
C5
0.1µF
C6
1µF
Start-Up Waveforms
L1
4.7µH
D7
V
8V
220mA
IN
3.3V
8V OUTPUT
5V/DIV
5
1
R1
113k
+
V
SW
IN
C1
2.2µF
R
LT1930
SS
–8V OUTPUT
5V/DIV
C7
10µF
30k
4
3
V
SS
SHDN
FB
D
SS
3.3V
GND
2
1N4148
R2
21k
0V
23V OUTPUT
10V/DIV
C2
0.1µF
C
SS
68nF
C1: X5R OR X7R, 6.3V
IL1 0.5A/DIV
D5
D6
C2-C4, C7, C8: X5R OR X7R, 10V
C5: X5R OR X7R, 16V
2ms/DIV
C8
1µF
C6: X5R OR X7R, 25V
D1- D6: BAT54S OR EQUIVALENT
D7: MBR0520 OR EQUIVALENT
L1: PANASONIC ELT5KT4R7M
–8V
10mA
1930/A TA12a
10
LT1930/LT1930A
U
PACKAGE DESCRIPTIO
S5 Package
5-Lead Plastic SOT-23
(Reference LTC DWG # 05-08-1633)
(Reference LTC DWG # 05-08-1635)
2.80 – 3.10
(.110 – .118)
(NOTE 3)
SOT-23
(Original)
SOT-23
(ThinSOT)
.90 – 1.45
1.00 MAX
A
A1
A2
L
(.035 – .057)
(.039 MAX)
.00 – .15
(.00 – .006)
.01 – .10
(.0004 – .004)
2.60 – 3.00
1.50 – 1.75
(.102 – .118) (.059 – .069)
(NOTE 3)
.90 – 1.30
(.035 – .051)
.80 – .90
(.031 – .035)
.35 – .55
(.014 – .021)
.30 – .50 REF
(.012 – .019 REF)
PIN ONE
.95
(.037)
REF
.25 – .50
(.010 – .020)
(5PLCS, NOTE 2)
.20
(.008)
A2
A
DATUM ‘A’
1.90
(.074)
REF
L
.09 – .20
(.004 – .008)
(NOTE 2)
A1
S5 SOT-23 0401
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
MILLIMETERS
2. DIMENSIONS ARE IN
(INCHES)
3. DRAWING NOT TO SCALE
4. DIMENSIONS ARE INCLUSIVE OF PLATING
5. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
6. MOLD FLASH SHALL NOT EXCEED .254mm
7. PACKAGE EIAJ REFERENCE IS:
SC-74A (EIAJ) FOR ORIGINAL
JEDEL MO-193 FOR THIN
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will notinfringe onexisting patent rights.
11
LT1930/LT1930A
U
TYPICAL APPLICATIO
3.3V to 5V, 450mA Step-Up Converter
L1
2.2µH
D1
V
OUT
V
IN
5V
3.3V
450mA
5
1
V
SW
C1
R1
30.1k
IN
2.2µF
LT1930A
SHDN
C2
10µF
4
3
SHDN
FB
R2
10k
GND
2
C1: TAIYO-YUDEN X5R LMK212BJ225MG
C2: TAIYO-YUDEN X5R JMK316B106ML
D1: ON SEMICONDUCTOR MBR0520
L1: MURATA LQH3C2R2M24
1930/A TA09a
Efficiency
90
85
80
75
V
V
= 3.3V
OUT
IN
3.3V to 5V Transient Response
= 5V
VOUT
50mV/DIV
AC COUPLED
70
65
ILI
0.5A/DIV
AC COUPLED
300mA
LOAD
60
55
50
CURRENT
200mA
20µs/DIV
1930 F03
100
200
400
0
500
300
LOAD CURRENT (mA)
1930/A TA09b
RELATED PARTS
PART NUMBER
LT1307
DESCRIPTION
Single Cell Micropower 600kHz PWM DC/DC Converter
Burst ModeTM Operation DC/DC Converter with Programmable Current Limit 1.5V Minimum, Precise Control of Peak Current Limit
COMMENTS
3.3V at 75mA from Single Cell, MSOP Package
LT1316
LT1317
2-Cell Micropower DC/DC Converter with Low-Battery Detector
Single Cell Micropower DC/DC Converter
3.3V at 200mA from 2 Cells, 600kHz Fixed Frequency
3V at 30mA from 1V, 1.7MHz Fixed Frequency
–5V at 150mA from 5V Input, ThinSOT Package
5V at 200mA from 3.3V Input, ThinSOT Package
20V at 12mA from 2.5V, ThinSOT Package
LT1610
LT1611
Inverting 1.4MHz Switching Regulator in 5-Lead ThinSOT
1.4MHz Switching Regulator in 5-Lead ThinSOT
LT1613
LT1615
Micropower Constant Off-Time DC/DC Converter in 5-Lead ThinSOT
Micropower Inverting DC/DC Converter in 5-Lead ThinSOT
Inverting 1.2MHz/2.2MHz Switching Regulator in 5-Lead ThinSOT
LT1617
–15V at 12mA from 2.5V Input, ThinSOT Package
–5V at 350mA from 5V input, ThinSOT Package
LT1931/LT1931A
Burst Mode is a trademark of Linear Technology Corporation.
1930af LT/TP 0801 2K • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2001
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
12
●
●
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
LT1930ES5#PBF 替代型号
型号 | 制造商 | 描述 | 替代类型 | 文档 |
LT1930ES5#TRMPBF | Linear | LT1930 - 1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters in ThinSOT; Package: SOT; Pins: 5; Te | 类似代替 |
LT1930ES5#PBF 相关器件
型号 | 制造商 | 描述 | 价格 | 文档 |
LT1930ES5#TR | Linear | LT1930 - 1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters in ThinSOT; Package: SOT; Pins: 5; Temperature Range: -40&deg;C to 85&deg;C | 获取价格 | |
LT1930ES5#TRM | Linear | 暂无描述 | 获取价格 | |
LT1930ES5#TRMPBF | Linear | LT1930 - 1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters in ThinSOT; Package: SOT; Pins: 5; Temperature Range: -40&deg;C to 85&deg;C | 获取价格 | |
LT1930ES5#TRPBF | Linear | LT1930 - 1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters in ThinSOT; Package: SOT; Pins: 5; Temperature Range: -40&deg;C to 85&deg;C | 获取价格 | |
LT1930_15 | Linear | 1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters in ThinSOT | 获取价格 | |
LT1931 | Linear | 1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT | 获取价格 | |
LT1931 | ADI | ThinSOT 封装的 1.2MHz 负输出 DC/DC 转换器 | 获取价格 | |
LT1931A | Linear | 1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT | 获取价格 | |
LT1931AES5 | Linear | LT1931 - 1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT; Package: SOT; Pins: 5; Temperature Range: -40&deg;C to 85&deg;C | 获取价格 | |
LT1931AES5#TR | Linear | LT1931 - 1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT; Package: SOT; Pins: 5; Temperature Range: -40&deg;C to 85&deg;C | 获取价格 |
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