APW7079-33DI-TRG [ANPEC]
Low-Supply-Current Synchronous Step-up DC-DC Converter; 低电源电流同步降压型DC- DC转换器
| 型号： | APW7079-33DI-TRG |
| 厂家： | 
ANPEC ELECTRONICS COROPRATION |
| 描述： | Low-Supply-Current Synchronous Step-up DC-DC Converter |
| 文件： | 总15页 (文件大小：284K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
APW7079
Low-Supply-Current Synchronous Step-up DC-DC Converter
General Description
Features
The APW7079 is a compact, PFM mode, and step-up
DC-DC converter with low quiescent current. The inter-
·
·
·
·
·
0.9V Typical Start-up Input Voltage
11mA Typical No Load Quiescent Current
nal synchronous rectifier reduces cost and PCB space
by eliminating the need for an external Schottky diode.
Low on-resistance of the internal switches improves the
efficiency up to 92%. The start-up voltage is guaranteed
below 1V. After start-up, the device can operate with input
voltage down to 0.7V. The APW7079 is suitable for por-
table battery-powered applications. Consuming only 11mA
quiescent current and an optimized control scheme al-
lows the device to operate at very high efficiency over the
entire load current range.
PFM Operation
High Efficiencyup to 92%
Fixed 1.8V, 2.6V, 2.8V, 3V, 3.3V, 3.8V, 4.5V or 5V
Output Voltage
·
·
·
·
600mA Internal Switch Current
Internal Synchronous Rectifier
SOT-89 Package
Lead Free and Green Devices Available
(RoHS Compliant)
Efficiency vs. Output Current
100
90
80
70
Applications
·
·
·
Toy
VIN=0.9V
60
Wireless Mouse
Portable Instrument
50
40
30
20
10
0
VIN=1.0V
VIN=2.4V
VIN=1.2V
VIN=1.5V
Pin Configuration
APW7079-30
100 1000
SOT89
0.1
1
10
OutputCurrent, I (m A)
OUT
Simplified Application Circuit
APW 7079
LX VOUT
GND
VIN
IIN
L1
IOUT VOUT
Top View
22mH
C1
22mF
C2
47mF
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright ã ANPEC Electronics Corp.
1
www.anpec.com.tw
Rev. A.3 - Oct., 2008
79
APW7079
Ordering and Marking Information
Package Code
D : SOT-89
APW7079 -
Operating Ambient Temperature Range
I : -40 to 85oC
Assembly Material
Handling Code
Handling Code
TR : Tape & Reel
Assembly Material
L : Lead Free Device G : Halogen and Lead Free Device
Voltage Code
Temperature Range
Package Code
Voltage Code
18: 1.8V
26: 2.6V
28: 2.8V
30: 3.0V
33: 3.3V
38: 3.8V
45: 4.5V
50: 5.0V
APW7079
XXXXX18
APW7079
XXXXX26
APW7079-18DI:
APW7079-28DI:
XXXXX - Date Code, 18: 1.8V
XXXXX - Date Code, 28: 2.8V
APW7079-26DI:
XXXXX - Date Code, 26: 2.6V
APW7079
XXXXX28
APW7079
XXXXX30
APW7079-28DI:
APW7079-33DI:
APW7079-50DI:
XXXXX - Date Code, 30: 3.0V
XXXXX - Date Code, 38: 3.8V
XXXXX - Date Code, 50: 5.0V
APW7079
XXXXX33
APW7079
XXXXX38
APW7079-33DI:
APW7079-45DI:
XXXXX - Date Code, 33: 3.3V
XXXXX - Date Code, 45: 5.0V
APW7079
XXXXX45
APW7079
XXXXX50
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which
are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020C for
MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen
free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by
weight).
Absolute Maximum Ratings (Note 1)
Symbol
Parameter
Rating
-0.3 ~ 6
Unit
V
VOUT
Output Voltage (VOUT to GND)
VLX
LX to GND Voltage
-0.3 ~ VOUT+1
-65 ~ 150
V
°C
TSTG
Storage Temperature
°C
TSDR
Maximum Lead Soldering Temperature, 10 Seconds
260
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Thermal Characteristics
Symbol
Parameter
Typical Value
Unit
Thermal Resistance -Junction to Ambient (Note 2)
180
oC/W
qJA
SOT-89
Note 2: qJA is measured with the component mounted on a high effective thermal conductivity test board in free air.
Recommended Operating Conditions (Note 3, 4)
Symbol
VOUT
VIN
Parameter
Range
0.7 ~ 5.5
Unit
V
Output Voltage (VOUT to GND)
Converter Supply Voltage
LX to GND Voltage
0.3 ~ VOUT+1
-0.3 ~ VOUT+0.3
0 ~ 0.9 x IOUT(MAX)
-40 ~ 85
V
VLX
V
IOUT
TA
Converter Output Current
Ambient Temperature
Junction Temperature
A
°C
°C
TJ
-40 ~ 125
Note 3: Refer to the typical application circuit
Note 4: Refer to “Application Information” for detail value.
Copyright ã ANPEC Electronics Corp.
2
www.anpec.com.tw
Rev. A.3 - Oct., 2008
APW7079
Electrical Characteristics
Refer to Typical Application Circuits. VIN=1.5V, RLOAD = ∞,and TA= -40 ~ 85oC, unless otherwise noted. Typical values are at TA=25oC.
APW7079
Symbol
Parameter
Test Conditions
Unit
Min.
Typ.
Max.
VIN
Converter Supply Voltage
Start-up Voltage
0.7
-
5.5
V
V
-
0.9
1.8
2.6
2.8
3.0
3.3
3.8
4.5
5.0
1
RLOAD=3kW
APW7079-18
1.764
2.548
2.744
2.94
3.234
3.724
4.41
4.9
1.836
2.652
2.856
3.06
APW7079-26
APW7079-28
APW7079-30
APW7079-33
APW7079-38
APW7079-45
APW7079-50
VOUT
Output Voltage
V
3.366
3.876
4.59
5.1
VOUT = VOUT(Typ.)+0.5V
Measured at VOUT
IDD
Supply Current
7
11
15
mA
No Inductor Connected
TOFF(MIN)
TON(MAX)
Main Switch Min. Off-time
Main Switch Max. On-time
Main Switch Max. Duty
0.6
0.9
4
1.2
ms
ms
%
3
5
75
-
85
APW7079-18
APW7079-26
APW7079-28
APW7079-30
APW7079-33
APW7079-38
APW7079-45
APW7079-50
APW7079-18
APW7079-26
APW7079-28
APW7079-30
APW7079-33
APW7079-38
APW7079-45
APW7079-50
-
0.5
0.4
0.4
0.4
0.4
0.4
0.3
0.3
1
-
-
-
-
-
-
-
RN-FET
Main Switch on Resistance
ILX=100mA
W
-
-
-
-
-
-
-
-
-
-
-
0.8
0.8
0.7
0.6
0.5
0.4
0.4
600
-
-
-
-
-
-
Synchronous Switch on
Resistance
RP-FET
ILX=100mA
W
-
-
-
-
-
-
-
500
-
-
ILIM
Main Switch Current Limit
700
1
mA
Main Switch Leakage Current
mA
Synchronous Switch Leakage
Current
-
-
1
mA
Over Temperature Shutdown
Over Temperature Hysteresis
-
-
150
40
-
-
°C
°C
Copyright ã ANPEC Electronics Corp.
3
www.anpec.com.tw
Rev. A.3 - Oct., 2008
APW7079
Typical Operating Characteristics
(Refer to the application circuit in the section “Typical Application Circuit”, VIN=1.5V, L1=22mH, TA=25oC unless otherwise noted.)
Efficiency vs. Output Current
Output Voltage vs. Output Current
1.84
1.82
1.80
1.78
1.76
1.74
1.72
1.70
1.68
1.66
1.64
100
90
80
70
60
50
40
30
20
10
0
VIN=0.9V
VIN=1.0V
VIN=1.2V
VIN=0.9V
VIN=1.0V
VIN=1.2V
VIN=1.5V
VIN=1.5V
APW7079-18
APW7079-18
0
50
100
150
200
250
300
0.1
1
10
100
1000
OutputCurrent, IOUT (m A)
Output Current, IOUT (mA)
Efficiency vs. Output Current
Output Voltage vs. Output Current
3.1
3.0
2.9
2.8
2.7
2.6
100
90
80
70
60
50
40
30
20
10
0
VIN=2.4V
VIN=1.5V
VIN=0.9V
VIN=1.0V
VIN=1.2V
VIN=1.5V
VIN=2.4V
VIN=1.2V
VIN=1.0V
VIN=0.9V
APW7079-30
APW7079-30
100 1000
0
50 100 150 200 250 300 350 400
0.1
1
10
OutputCurrent, IOUT (m A)
OutputCurrent, IOUT (m A)
Output Voltage vs. Output Current
Output Voltage vs. Output Current
100
6
5
4
3
2
1
0
90
80
70
60
50
40
30
20
10
0
VIN=3.6V
VIN=0.9V
VIN=0.9V
VIN=1.0V
VIN=2.4V
VIN=3.6V
VIN=1.0V
VIN=1.5V
VIN=2.4V
VIN=1.2V
VIN=1.5V
VIN=1.2V
APW7079-50
100 1000
APW7079-50
250 300 350
0.1
1
10
0
50
100
150
200
OutputCurrent, IOUT (m A)
OutputCurrent, IOUT (m A)
Copyright ã ANPEC Electronics Corp.
4
www.anpec.com.tw
Rev. A.3 - Oct., 2008
APW7079
Typical Operating Characteristics (Cont.)
(Refer to the application circuit in the section “Typical Application Circuit”, VIN=1.5V, L1=22mH, TA=25oC unless otherwise noted.)
Start-up/Hold-on Voltage vs.
Start-up/Hold-on Voltage vs.
Output Current
Output Current
1.4
1.2
1
1.4
1.2
1
Start-up
Start-up
Hold-on
0.8
0.6
0.4
0.2
0
0.8
0.6
0.4
0.2
0
Hold-on
APW7079-18
40
APW7079-30
40
0
10
20
30
50
0
10
20
30
50
OutputCurrent, IOUT (m A)
OutputCurrent, IOUT (m A)
Start-up/Hold-on Voltage vs.
Output Current
No Load Battery Current
vs. Input Voltage
1.4
1.2
1
70
60
50
40
30
20
10
0
Start-up
0.8
0.6
0.4
0.2
0
Hold-on
APW7079-50
APW7079-18
APW7079-30
APW7079-50
0
10
20
30
40
50
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
OutputCurrent, IOUT (m A)
InputVoltage, VIN (V)
Main Switch ON Resistance vs.
Junction Temperature
Synchronous Switch ON Resis-
tance vs. Junction Temperature
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
APW7079-18
APW7079-30
APW7079-18
APW7079-30
APW7079-50
APW7079-50
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
o
o
Junction Tem perature, TJ ( C)
Junction Tem perature, TJ ( C)
Copyright ã ANPEC Electronics Corp.
5
www.anpec.com.tw
Rev. A.3 - Oct., 2008
APW7079
Operating Waveforms
Load Transient Response
Line Transient Response
IOUT=10mA -> 110mA -> 10mA
IOUT rise/fall time = 1ms
VIN
VIN=1.5V
IOUT
2V
1.5V
110mA
2
10mA
VOUT
VOUT
3
1
3
CH2:IOUT, 100m A/Div, DC
CH3:VOUT, 50m V/Div, AC
Tim e:0.1m s/Div
CH1:VIN,0.5V/Div,DC
CH3:VOUT,50m V/Div,AC
Tim e:0.1m s/Div
Heavy Load Switching Waveform
IOUT=100mA, VIN=1.5V
ILX
2
3
VOUT
VLX
4
CH2:I ,200m A/Div,DC
LX
CH3:VOUT,50m V/Div,AC
CH4:VLX,2V/Div,DC
Tim e:5ms/Div
Copyright ã ANPEC Electronics Corp.
6
www.anpec.com.tw
Rev. A.3 - Oct., 2008
APW7079
Pin Description
PIN
FUNCTION
NO.
NAME
Junction ofN-FET and P-FET Drains. Connectthe inductor here and m inim ize the trace area for
1
LX
lowestEM I.
2
3
VOUT
GND
Converteroutputand controlcircuitrybiassupplypin.
Ground.
Block Diagram
VOUT
2
Zero Crossing
Comparator
+
Thermal
Shutdown
-
0.9µs Min.
off-time
Synchronous
Switch
Error
Comparator
3
LX
-
+
Control
Logic
Gate
Driver
Main Switch
VREF
4µs Max.
on-time
Current Limit
Comparator
RSENSE
+
-
Soft
start
1
GND
Typical Application Circuit
APW 7079
VIN
IIN
IOUT
L1
LX
VOUT
GND
22mH
C1
22mF
Copyright ã ANPEC Electronics Corp.
7
www.anpec.com.tw
Rev. A.3 - Oct., 2008
APW7079
Function Description
Control Scheme
The converter monitors the output voltage. When the in-
ternal feedback voltage falls below the reference voltage,
the main switch turns on and the inductor current ramps
up. The main switch turns off when the current reaches
the peak current limit of typical 600mA. The second crite-
rion that turns off the switch is the maximum on-time of
4ms (typical). As the main switch is turned off, the syn-
chronous switch is turned on and delivers the current to
the output. The main switch remains off for a minimum of
900ns (typical), or until the internal feedback voltage drops
below the reference voltage. By the control scheme with
low quiescent current of 11mA (typical), the converter gets
high efficiency over a wide load range.
Start-Up
A startup oscillator circuit is integrated in the APW7079.
When the power is applied to the device, the circuit pumps
the output voltage high. Once the output voltage reaches
1.4V (typ), the main DC-DC circuitry turns on and boosts
the output voltage to the final regulation point.
Synchronous Rectification
The internal synchronous rectifier eliminates the need
for an external Schottky diode, thus reducing cost and
board space. During the cycle off-time, the P-channel
MOSFET turns on and shunts the MOSFET body diode.
As a rewsult, the synchronous rectifier significantly im-
proves efficiency without the addition of an external
component. Conversion efficiency can be as high as 92%.
Over-Temperature Protection
The over-temperature circuit limits the junction tempera-
ture of the APW7079. When the junction temperature ex-
ceeds 150°C, a thermal sensor turns off the power
MOSFETs, allowing the devices to cool. The thermal sen-
sor allows the converter to start a start-up process and
regulate the output voltage again after the junction tem-
perature cools by 40°C.The OTP is designed with a 40°C
hysteresis to lower the average TJ during continuous ther-
mal overload conditions, increasing lifetime of the device.
Copyright ã ANPEC Electronics Corp.
8
www.anpec.com.tw
Rev. A.3 - Oct., 2008
APW7079
Application Information
Input Capacitor Selection
Since the output ripple is the product of the peak inductor
current and the output capacitor ESR, using low-ESR tan-
talum capacitors for the best performance or connecting
two or more filter capacitors in parallel is recommended.
The input capacitor is chosen based on the voltage rating
and the RMS current rating. For reliable operation, it is
recommended to select the capacitor voltage rating at
least 1.3 times higher than the maximum input voltage.
The maximum RMS current rating of the input capacitor is
calculated as the following equation:
Inductor Selection
The inductor value determines the inductor ripple current
and affects the load transient response. It is recom-
mended to select the boost inductor in order to keep the
maximum peak inductor current below the current limit
threshold of the power switch. For example, the current
limit threshold of the APW7079’s switch is 600mA. For
choosing an inductor which has peak current passed,
firstly, it is necessary to consider the output load (IOUT),
input (VIN), and output voltage (VOUT). Secondly, the de-
sired current ripple in the inductor also needed to be
taken into account. The current was calculated in “Output
Capacitor Selection”. Since the output ripple is the prod-
uct of the peak inductor current and the output capacitor
ESR, the larger inductor value reduces the inductor cur-
rent ripple and output voltage ripple but typically offers a
larger physical size.
V
IN × TON
1
IRMS
=
×
L
3
where
TON = main switch max. on-time (4µs typical)
VIN = inputvoltage
L = inductorvalue in µH
The capacitors should be placed close to the inductor
and the GND.
Output Capacitor Selection
An output capacitor is required to filter the output and sup-
ply the load transient current. The output ripple is the sum
of the voltages across the ESR and the ideal output
capacitor. The peak-to-peak voltage of the ESR is calcu-
lated as the following equations:
The inductor value also slightly affects the maximum out-
put current. The maximum output current can be calcu-
lated as below:
DVESR =IPEAK x ESR
VOUT ×IOUT
VIN ×TON
IPEAK
=
+
£ ILIM
VIN ×h
2×L
é
ù
- VIN
ö
OUT
VIN
æ
V
IOUT(MAX)
=
I
- TOFF
ç
ç
÷ × h
ú
ê LIM
ë
Where
÷
VOUT
2´ L
è
ø
û
IPEAK = peak current of inductor in amp
where
h
= efficiency (0.85 typical)
TOFF = main switch min. off-time (0.9ms typical)
The peak-to-peak voltage of the ideal output capacitor is
calculated as the following equation:
Therefore, to consider the balance of the efficiency and
component size, an inductor value of 22mH to 47mH is
recommended in most applications.
IOUT ´ TON
DVCOUT =
COUT
ILX
IOUT
VIN IIN
LX
VOUT
For the applications using tantalum capacitors, the DVCOUT
is much smaller than the VESR and can be ignored.
Therefore, the AC peak-to-peak output voltage (DVOUT) is
shown as below:
ISWP
ISWN
N-FET
CIN
P-FET
ESR
COUT
DVOUT = IPEAK x ESR
Copyright ã ANPEC Electronics Corp.
9
www.anpec.com.tw
Rev. A.3 - Oct., 2008
APW7079
Application Information (Cont.)
ILX
TJ = TA + TR
ILIM
where
TA = the ambient temperature.
IPEAK
IIN
The power dissipation can be calculated as below:
PD = POUT x (1-h)/h
where
POUT = Output power (VOUT x IOUT
)
ISWN
h = Efficiency
As an example, the APW7079-18 converts an input volt-
age 1.2V to provide a load current of 175mA at ambient
temperature of 85°C. Assume the efficiency (h) is 0.75.
Therefore, the power dissipated on the converter is:
ISWP
PD = 1.8 x 0.175 x (1-0.75)/0.75= 0.105 Watt
IOUT
Since the power dissipation includes the loss of external
components, the actual value is slightly lower. For the
VOUT
IPEAK x ESR
SOT-89 package, the qJA is 180°C/W. Thus, the junction
temperature of the regulator is as below:
VOUT
TJ = 85°C + (PD)(180) = 104 °C
The maximum junction temperature should be less than
125°C. Note that, the junction temperature is lower at
higher output voltages due to reduced switch resistance.
Thermal Consideration
In most applications, the APW7079 does not dissipate
much heat due to its high efficiency. However, in applica-
tions where the APW7079 is running at high ambient tem-
perature with low output voltage, the heat dissipated may
exceed the maximum junction temperature of the part. If
the junction temperature reaches approximately 150°C,
both power switches will be turned off and the LX node
will become high impedance. To avoid the APW7079 from
exceeding the maximum junction temperature, the user
will need to do some thermal analysis. The goal of the
thermal analysis is to determine whether the power dis-
sipated exceeds the maximum junction temperature of
the part. The temperature rise is given by:
Layout Consideration
Forallswitching powersuppliesespeciallywith high peak
currentsand switching frequency, the layoutisan im por-
tantstep in the design. Ifthe layoutisnotcarefullydone,
the regulator may show noise problems and duty cycle
jitter.
1.The input capacitor should be placed close to the
device, which can reduce copper trace resistance and
effect input ripple of the IC.
2.The inductor should be placed as close as possible to
the switch pin to minimize the switching noise.
3.The output capacitor should be place closed to the
VOUT and the GND.
TR = (PD)(qJA)
where PD is the power dissipated by the regulator and qJA
is the thermal resistance from the junction of the die to
the ambient temperature. The junction temperature, TJ,
is given by:
Copyright ã ANPEC Electronics Corp.
10
www.anpec.com.tw
Rev. A.3 - Oct., 2008
APW7079
Application Information (Cont.)
Layout Consideration (Cont.)
Copyright ã ANPEC Electronics Corp.
11
www.anpec.com.tw
Rev. A.3 - Oct., 2008
APW7079
Package Information
SOT-89
D
A
C
D1
e
e1
B
B1
SOT-89
S
Y
M
B
O
MILLIMETERS
MIN. MAX.
INCHES
MIN.
MAX.
0.063
0.022
0.019
0.017
0.181
0.072
0.102
0.090
L
A
1.40
0.44
0.36
0.35
4.40
1.60
0.56
0.48
0.44
4.60
0.055
0.017
0.014
0.014
0.173
0.064
0.090
0.084
B
B1
C
D
D1
E
1.62
2.29
1.83
2.60
E1
e
2.13
2.29
1.50 BSC
3.00 BSC
0.059 BSC
0.118 BSC
e1
H
0.155
0.035
0.167
0.047
3.94
0.89
4.25
1.20
L
Note : Follow JEDEC TO-243 AA.
Copyright ã ANPEC Electronics Corp.
12
www.anpec.com.tw
Rev. A.3 - Oct., 2008
APW7079
Carrier Tape & Reel Dimensions
P0
P2
P1
OD0
A
K0
A0
A
OD1
B
B
SECTION A-A
SECTION B-B
d
T1
Application
SOT-89
A
H
T1
12.4+2.00 13.0+0.50
-0.00 -0.20
P2 D0
C
d
D
W
E1
12.0±0.30 1.75±0.10
A0 B0
F
5.50±0.05
K0
178.0±2.00
P0
50 MIN.
P1
1.5 MIN.
D1
20.2 MIN.
T
1.5+0.10
-0.00
0.6+0.00
-0.40
4.0±0.10
8.0±0.10
2.0±0.05
4.80±0.20 4.50±0.20 1.80±0.20
1.5 MIN.
(mm)
Devices Per Unit
Package Type
SOT-89
Unit
Quantity
1000
Tape & Reel
Copyright ã ANPEC Electronics Corp.
13
www.anpec.com.tw
Rev. A.3 - Oct., 2008
APW7079
Taping Direction Information
SOT-89
USER DIRECTION OF FEED
Reflow Condition (IR/Convection or VPR Reflow)
tp
TP
Critical Zone
TL to TP
Ramp-up
TL
tL
Tsmax
Tsmin
Ramp-down
ts
Preheat
25
°
t 25 C to Peak
Time
Reliability Test Program
Test item
SOLDERABILITY
HOLT
PCT
TST
ESD
Method
MIL-STD-883D-2003
MIL-STD-883D-1005.7
JESD-22-B, A102
MIL-STD-883D-1011.9
MIL-STD-883D-3015.7
JESD 78
Description
245°C, 5 sec
1000 Hrs Bias @125°C
168 Hrs, 100%RH, 121°C
-65°C~150°C, 200 Cycles
VHBM > 2KV, VMM > 200V
10ms, 1tr > 100mA
Latch-Up
Copyright ã ANPEC Electronics Corp.
14
www.anpec.com.tw
Rev. A.3 - Oct., 2008
APW7079
Classification Reflow Profiles
Profile Feature
Average ramp-up rate
(TL to TP)
Sn-Pb Eutectic Assembly
Pb-Free Assembly
3°C/second max.
3°C/second max.
Preheat
100°C
150°C
60-120 seconds
150°C
200°C
60-180 seconds
- Temperature Min (Tsmin)
- Temperature Max (Tsmax)
- Time (min to max) (ts)
Time maintained above:
- Temperature (TL)
183°C
60-150 seconds
217°C
60-150 seconds
- Time (tL)
Peak/Classification Temperature (Tp)
See table 1
See table 2
Time within 5°C of actual
Peak Temperature (tp)
10-30 seconds
20-40 seconds
Ramp-down Rate
6°C/second max.
6°C/second max.
6 minutes max.
8 minutes max.
Time 25°C to Peak Temperature
Note: All temperatures refer to topside of the package. Measured on the body surface.
Table 1. SnPb Eutectic Process – Package Peak Reflow Temperatures
Volume mm3
350
Volume mm3
Package Thickness
<350
<2.5 mm
³ 2.5 mm
240 +0/-5°C
225 +0/-5°C
225 +0/-5°C
225 +0/-5°C
Table 2. Pb-free Process – Package Classification Reflow Temperatures
Volume mm3
Volume mm3
Volume mm3
>2000
Package Thickness
<350
350-2000
<1.6 mm
1.6 mm – 2.5 mm
³ 2.5 mm
260 +0°C*
260 +0°C*
250 +0°C*
260 +0°C*
250 +0°C*
245 +0°C*
260 +0°C*
245 +0°C*
245 +0°C*
* Tolerance: The device manufacturer/supplier shall assure process compatibility up to and including the stated
classification temperature (this means Peak reflow temperature +0°C. For example 260°C+0°C) at the rated MSL
level.
Customer Service
Anpec Electronics Corp.
Head Office :
No.6, Dusing 1st Road, SBIP,
Hsin-Chu, Taiwan, R.O.C.
Tel : 886-3-5642000
Fax : 886-3-5642050
Taipei Branch :
2F, No. 11, Lane 218, Sec 2 Jhongsing Rd.,
Sindian City, Taipei County 23146, Taiwan
Tel : 886-2-2910-3838
Fax : 886-2-2917-3838
Copyright ã ANPEC Electronics Corp.
15
www.anpec.com.tw
Rev. A.3 - Oct., 2008
相关型号：
©2020 ICPDF网 联系我们和版权申明