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PDF CS8161 Data sheet ( Hoja de datos )
| Número de pieza | CS8161 | |
| Descripción | 12V/ 5V Low Dropout Dual Regulator with ENABLE | |
| Fabricantes | Cherry Semiconductor Corporation | |
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CS8161
12V, 5V Low Dropout Dual Regulator
with ENABLE
Description
Features
The CS8161 is a 12V/5V dual out-
put linear regulator. The 12V ± 5%
output sources 400mA and the 5V
±2.0% output sources 200mA.
The on board ENABLE function
controls the regulatorÕs two out-
puts. When the ENABLE pin is
low, the regulator is placed in
SLEEP mode. Both outputs are dis-
abled and the regulator draws only
200nA of quiescent current.
Ttehcetepdraimgaairnystouovtpeurvt,oVltOagUeT1
is pro-
condi-
tions. Both outputs are protected
against short circuit and thermal
runaway conditions.
The CS8161 is packaged in a 5 lead
TOÐ220 with copper tab. The cop-
per tab can be connected to a heat
sink if necessary. It is also available
in a 16 lead SO wide package.
Absolute Maximum Ratings
Input Voltage
Operating Range .....................................................................Ð15V to 26V
Overvoltage Protection.........................................................................74V
Internal Power Dissipation ..................................................Internally Limited
Junction Temperature Range.......................................................Ð40¡C +150¡C
Storage Temperature Range....................................................Ð65¡C to +150¡C
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
ESD (Human Body Model) ...........................................................................2kV
Block Diagram
s Two regulated outputs
12V ±5.0%; 400mA
5V ±2.0%; 200mA
s Very low SLEEP mode cur-
rent drain 200nA
s Fault Protection
Reverse Battery (-15V)
74V Load Dump
-100V Reverse Transient
Short Circuit
Thermal Shutdown
Package Options
TO-220 5 Lead
Tab (Gnd)
1 VIN
2 VOUT1
3 Gnd
4 ENABLE
5 VOUT2
VIN
ENABLE
Gnd
+
Pre-Regulator
-
+
-
Anti-saturation
and
Current Limit
Bandgap
Reference
Thermal
Shutdown
Over Voltage
Shutdown
+
-
Anti-saturation
and
Current Limit
VOUT2
VOUT1
1
16 Lead SO Wide
(internally fused leads)
NC 1
NC
VIN
Gnd
Gnd
VOUT(1)
SENSE1
ENABLE
Gnd
Gnd
NC
Gnd
Gnd
SENSE1
VOUT(2)
NC
Rev. 4/5/99
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: [email protected]
Web Site: www.cherry-semi.com
1 A ¨ Company
1 page  
Typical Performance Characteristics: continued
Dropout Voltage vs. Output Current for VOUT2
800
750 VIN = 4.0V
700 No Load on VOUT1
125°C
650
600
-40°C
550
500
450
350 25°C
300
250
200
150
100
50
0
0 25 50 75 100 125 150 175 200 225 250
Output Current (mA)
Quiescent Current vs. Output Current @ Dropout for VOUT2
60
VIN = 4.0V
55
50
45
40
35
30
25
20
15
10
5
0
0 25 50
-40°C
125°C
25°C
75 100 125 150
Output Current (mA)
175 200 225
250
Enable Threshold Voltage vs.
Temperature
1.305
1.300
VIN = 14.0V
1.295
1.290
1.285
-40 -20
0 20 40 60 80 100 120 140
Temperature (Deg. C)
ENABLE Current vs. ENABLE Voltage
Cursor ( 1.8500V, 253.9nA.)
Marker ( 1.8500V, 253.9nA.)
100
80
60
40
20
0
01
23
45
VENABLE (V)
12mA ENABLE Current vs.
ENABLE Voltage
5.0
4.0
3.0
2.0
1.0
0.0
0.0
5
10 15 20 25
VENABLE
Definition of Terms
Dropout Voltage: The input-output voltage differential at
which the circuit ceases to regulate against further
reduction in input voltage. Measured when the
output voltage has dropped 100mV from the nom-
inal value obtained at 14V input, dropout voltage
is dependent upon load current and junction tem-
perature.
Input Voltage: The DC voltage applied to the input termi-
nals with respect to ground.
Input Output Differential: The voltage difference
between the unregulated input voltage and the
regulated output voltage for which the regulator
will operate.
Line Regulation: The change in output voltage for a
change in the input voltage. The measurement is
made under conditions of low dissipation or by
using pulse techniques such that the average chip
temperature is not significantly affected.
Load Regulation: The change in output voltage for a
change in load current at constant chip tempera-
ture.
Long Term Stability: Output voltage stability under accel-
erated life-test conditions after 1000 hours with
maximum rated voltage and junction temperature.
Output Noise Voltage: The rms AC voltage at the output,
with constant load and no input ripple, measured
over a specified frequency range.
Quiescent Current: The part of the positive input current
that does not contribute to the positive load cur-
rent. i.e., the regulator ground lead current.
Ripple Rejection: The ratio of the peak-to-peak input rip-
ple voltage to the peak-to-peak output ripple volt-
age.
Temperature Stability of VOUT: The percentage change in
output voltage for a thermal variation from room
temperature to either temperature extreme.
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet CS8161.PDF ] | |
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