CS8182YDPR5 [ETC]
Positive Adjustable Voltage Regulator ; 正，可调式稳压器\n
| 型号： | CS8182YDPR5 |
| 厂家： | 
ETC |
| 描述： | Positive Adjustable Voltage Regulator
|
| 文件： | 总8页 (文件大小：67K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CS8182
Micropower 200mA Low Dropout
Tracking Regulator/Line Driver
Description
Features
The CS8182 is a monolithic integrat- short circuit and thermal runaway
ꢀ 200mA Source Capability
ed low dropout tracking regulator
designed to provide an adjustable
buffered output voltage that closely
tracks (±10mV) the reference input.
The output delivers up to 200mA
while being able to be configured
higher, lower or equal to the refer-
ence voltage.
conditions. The device also can
withstand 45V load dump tran-
sients and –50V reverse polarity
input voltage transients. This makes
it suitable for use in automotive
environments.
ꢀ Output Tracks within
±10mV Worst Case
ꢀ Low Dropout (0.35V typ.
@ 200mA)
The VREF/ ENABLE lead serves two
purposes. It is used to provide the
input voltage as a reference for the
output and it also can be pulled low
to place the device in sleep mode
where it nominally draws less than
10µA from the supply.
ꢀ Low Quiescent Current
ꢀ Thermal Shutdown
The output has been designed to
operate over a wide range (2.8V to
40V) while still maintaining excel-
lent DC characteristics. The CS8182
is protected from reverse battery,
ꢀ Short Circuit Protection
ꢀ Wide Operating Range
Block Diagram
Package Options
VIN
VOUT
8 Lead SO Narrow
ESD
1
V
OUT
V
IN
Current Limit &
SAT Sense
Gnd
Gnd
Adj
Gnd
Gnd
V
/ENABLE
REF
Adj
–
ESD
ESD
ENABLE
5 Lead D2 PAK
+
VREF/ENABLE
Tab (Gnd)
1
VIN
2
3
4
5
VOUT
Gnd
Adj
+
Thermal
Shutdown
Gnd
VREF
–
1
2.0V
Consult Factory for 8 Lead SOIC with
exposed pad.
ON Semiconductor
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885–3600 Fax: (401)885–5786
N. American Technical Support: 800-282-9855
Web Site: www.onsemi.com
September, 2000 - Rev. 8
1
Absolute Maximum Ratings
Storage Temperature..............................................................................................................................................−65°C to 150°C
Supply Voltage Range (continuous).........................................................................................................................−15V to 40V
Supply Voltage Range (normal, continuous) ...........................................................................................................3.4V to 40V
Peak Transient Voltage (VIN = 14V, Load Dump Transient = 31V)...................................................................................45V
Voltage Range (Adj, VOUT, VREF/ ENABLE) ...........................................................................................................−10V to 45V
Maximum Junction Temperature.........................................................................................................................................150°C
ESD Capability (Human Body Model) ...................................................................................................................................2kV
Lead Temperature Soldering
Wave Solder(through hole styles only) ......................................................................................10 sec. max, 260°C peak
Reflow (SMD styles only).......................................................................................60 sec. max above 183°C, 230°C peak
Electrical Characteristics: VIN = 14V; VREF/ENABLE > 2.75V; −40°C < TJ < 125°C;
COUT ≥ 10µF; 0.1Ω ≤ COUT-ESR ≤ 10Ω @ 10kHz, unless otherwise specified.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ꢀ
Regulator Output
VREF – VOUT
4.5V ≤ VIN ≤ 26V,
−10
10
mV
VOUT Tracking Error
100µA ≤ IOUT ≤ 200mA (Note 1)
Dropout Voltage
IOUT = 100µA
IOUT = 200mA
100
350
150
600
mV
mV
(VIN – VOUT
)
Line Regulation
Load Regulation
Adj Lead Current
Current Limit
4.5V ≤ VIN ≤ 26V (Note 1)
100µA ≤ IOUT ≤ 200mA (Note 1)
Loop in Regulation
10
10
mV
mV
µA
0.2
1.0
700
VIN = 14V, VREF = 5V, VOUT = 90% VREF
(Note 1)
225
mA
Quiescent Current
VIN = 12V, IOUT = 200mA
VIN = 12V, IOUT = 100µA, TJ ≤ 85°C
VIN = 12V, VREF/ ENABLE = 0V, TJ ≤ 85°C
15
50
10
25
100
30
mA
µA
µA
(IIN – IOUT
)
Reverse Current
Ripple Rejection
V
OUT = 5V, VIN = 0V
0.2
1.5
mA
dB
f = 120Hz, IOUT = 200mA,
4.5V ≤ VIN ≤ 26V
60
Thermal Shutdown
GBD
150
180
210
°C
ꢀ
VREF/ENABLE
Enable Voltage
0.80
0
2.00
2.75
1
V
Input Bias Current
VREF/ ENABLE
µA
Note 1: VOUT connected to Adj lead.
Package Lead Description
LEAD SYMBOL
PACKAGE LEAD #
8 Lead SOIC
FUNCTION
5 Lead D2PAK
Narrow
1
8
VIN
Input voltage.
2
1
VOUT
Regulated output.
3
4
5
2, 3, 6, 7
Gnd
Adj
Ground.
4
5
Adjust lead.
V
REF/ ENABLE
Reference voltage and ENABLE input.
2
Circuit Description
ENABLE Function
By pulling the VREF/ ENABLE lead below 2V typically,
(see Figure 4 or Figure 5), the IC is disabled and enters a
sleep state where the device draws less than 10µA from
supply. When the VREF/ ENABLE lead is greater than
2.75V, VOUT tracks the VREF/ ENABLE lead normally.
V
, 200mA
OUT
V
V
IN
B+
OUT
C2**
10µF
C1*
0.1µF
Gnd
Gnd
Gnd
Gnd
CS8182
R
V
/
REF
V
Adj
REF
ENABLE
Output Voltage
from MCU
The output is capable of supplying 200mA to the load
while configured as a similar (Figure 1), lower (Figure 3),
or higher (Figure 2) voltage as the reference lead. The Adj
lead acts as the inverting terminal of the op amp and the
VREF lead as the non-inverting.
The device can also be configured as a high-side driver as
displayed in Figure 6.
Figure 4: Tracking regulator with ENABLE circuit.
V
(5V)
REF
V
OUT
, 200mA
V
IN
CS8101
6–40V
V
V
B+
5V
Loads
OUT
IN
C2**
10µF
C1*
0.1µF
100nF
Gnd
Gnd
Gnd
Gnd
CS8182
V
V
IN
OUT
5V
µC
10µF
To Load
(e.g. sensor)
V
/
REF
ENABLE
Gnd
Gnd
Adj
Gnd
Gnd
CS8182
V
OUT
= V
REF
I/O
V
/
REF
Adj
ENABLE
Figure 1: Tracking regulator at the same voltage.
V
, 200mA
OUT
Figure 5: Alternative ENABLE circuit.
V
V
IN
Loads
B+
OUT
C2**
10µF
C1*
0.1µF
Gnd
Gnd
Gnd
Gnd
CS8182
R
F
V
V
B+
200mA
OUT
IN
V
/
REF
Adj
V
REF
ENABLE
Gnd
Gnd
Gnd
Gnd
CS8182
R
A
V
= V
(1 +R
REF
)
F
OUT
R
A
V
/
REF
MCU
Adj
ENABLE
Figure 2: Tracking regulator at higher voltages.
V
= B+ − V
OUT
SAT
Figure 6: High-Side Driver.
V
, 200mA
OUT
B+
V
V
IN
Loads
OUT
C2**
10µF
C1*
0.1µF
Gnd
Gnd
Gnd
Gnd
CS8182
R1
V
/
REF
Adj
V
REF
ENABLE
R2
R2
R1 + R2
V
= V
(
)
OUT
REF
Figure 3: Tracking regulator at lower voltages.
* C1 is required if the regulator is far from the power source filter.
** C2 is required for stability.
3
Application Notes
External Capacitors
The output capacitor for the CS8182 is required for stabili-
ty. Without it, the regulator output will oscillate. Actual
size and type may vary depending upon the application
load and temperature range. Capacitor effective series
resistance (ESR) is also a factor in the IC stability. Worst-
case is determined at the minimum ambient temperature
and maximum load expected.
I
IN
I
OUT
V
Smart
IN
V
OUT
Regulator
Control
Features
}
The output capacitor can be increased in size to any
desired value above the minimum. One possible purpose
of this would be to maintain the output voltage during
brief conditions of negative input transients that might be
characteristic of a particular system.
I
Q
Figure 1. Single output regulator with key performance parameters
labeled.
The capacitor must also be rated at all ambient tempera-
tures expected in the system. To maintain regulator stabili-
ty down to -40°C, a capacitor rated at that temperature
must be used.
Heatsinks
More information on capacitor selection for Smart
Regulators™ is available in the Smart Regulator applica-
tion note, “Compensation for Linear Regulators.”
A heatsink effectively increases the surface area of the
package to improve the flow of heat away from the IC and
into the surrounding air.
Each material in the heat flow path between the IC and the
outside environment will have a thermal resistance. Like
series electrical resistances, these resistances are summed
Calculating Power Dissipation
in a Single Output Linear Regulator
to determine the value of RΘJA
.
The maximum power dissipation for a single output regu-
lator (Figure 1) is:
R
ΘJA = RΘJC + RΘCS + RΘSA
(3)
PD(max) = {VIN(max) - VOUT(min)}IOUT(max) + VIN(max) Q
I
(1)
where:
ΘJC = the junction–to–case thermal resistance,
R
where:
RΘCS = the case–to–heatsink thermal resistance, and
RΘSA = the heatsink–to–ambient thermal resistance.
VIN(max) is the maximum input voltage,
VOUT(min) is the minimum output voltage,
RΘJC appears in the package section of the data sheet. Like
RΘJA, it is a function of package type. RΘCS and RΘSA are
functions of the package type, heatsink and the interface
between them. These values appear in heat sink data
sheets of heatsink manufacturers.
IOUT(max) is the maximum output current for the applica-
tion, and
IQ is the quiescent current the regulator consumes at
IOUT(max)
.
Once the value of PD(max) is known, the maximum permis-
sible value of RΘJA can be calculated:
150°C - TA
(2)
RΘJA
=
PD
The value of RΘJA can then be compared with those in
the package section of the data sheet. Those packages
with RΘJA's less than the calculated value in equation 2
will keep the die temperature below 150°C.
In some cases, none of the packages will be sufficient to
dissipate the heat generated by the IC, and an external
heatsink will be required.
4
Package Specification
PACKAGE THERMAL DATA
PACKAGE DIMENSIONS IN mm (INCHES)
D
Thermal Data
5 Lead
8 Lead
SOIC Narrow
D2PAK
Lead Count
Metric
English
Max Min
.197 .189
RΘJC
RΘJA
typ
typ
4.0
45
°C/ W
°C/ W
Max
Min
4.80
10-50*
165
8 Lead SOIC Narrow
5.00
* Depending on thermal properties of substrate. RΘJA = RΘJC + RΘCA
Surface Mount Narrow Body (D); 150 mil wide
6.20 (.244)
5.80 (.228)
4.00 (.157)
3.80 (.150)
0.51 (.020)
0.33 (.013)
1.27 (.050) BSC
1.75 (.069) MAX
1.57 (.062)
1.37 (.054)
0.25 (.010)
0.19 (.008)
1.27 (.050)
0.40 (.016)
0.25 (0.10)
0.10 (.004)
D
REF: JEDEC MS-012
5 Lead D2PAK (DP)
10.31 (.406)
10.05 (.396)
1.40 (.055)
1.14 (.045)
1.68 (.066)
1.40 (.055)
8.53 (.336)
8.28 (.326)
15.75 (.620)
14.73 (.580)
2.74(.108)
2.49(.098)
0.91 (.036)
0.66 (.026)
2.79 (.110)
2.29 (.090)
1.70 (.067) REF
.254 (.010) REF
0.10 (.004)
0.00 (.000)
4.57 (.180)
4.31 (.170)
Ordering Information
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Semiconductor Components Industries, LLC (SCILLC). ON
Semiconductor reserves the right to make changes without
further notice to any products herein. For additional infor-
mation and the latest available information, please contact
your local ON Semiconductor representative.
Part Number
CS8182YDP5
CS8182YDPR5
CS8182YD8
Description
5 Lead D2PAK
5 Lead D2PAK (tape & reel)
8 Lead SOIC Narrow
CS8182YDR8
8 Lead SOIC Narrow (tape & reel)
© Semiconductor Components Industries, LLC, 2000
5
Notes
Notes
Notes
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