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CS8151YDWF16

P1-P3P4-P6P7-P9P10-P12P13-P14
© Semiconductor Components Industries, LLC, 2008
October, 2008 − Rev. 18
1 Publication Order Number:
CS8151/D
CS8151
5.0 V, 100 mA Low Dropout
Linear Regulator with
Watchdog, RESET
,
and Wake Up
The CS8151 is a precision 5.0 V, 100 mA micro−power voltage
regulator with very low quiescent current (400 mA typical at 200 mA
load). The 5.0 V output is accurate within ±2% and supplies 100 mA
of load current with a typical dropout voltage of 400 mV.
Microprocessor control logic includes Watchdog, Wake Up and
RESET
. This unique combination of low quiescent current and full
microprocessor control makes the CS8151 ideal for use in battery
operated, microprocessor controlled equipment.
The CS8151 Wake Up function brings the microprocessor out of
Sleep mode. The microprocessor in turn, signals its Wake Up status
back to the CS8151 by issuing a Watchdog signal.
The Watchdog logic function monitors an input signal (WDI) from
the microprocessor. The CS8151 responds to the falling edge of the
Watchdog signal which it expects at least once during each wake−up
period. When the correct Watchdog signal is received, a falling edge is
issued on the wake−up signal line.
RESET
is independent of V
IN
and operates correctly to an output
voltage as low as 1.0 V. A RESET
signal is issued in any of three
situations. During power up the RESET
is held low until the output
voltage is in regulation. During operation if the output voltage shifts
below the regulation limits, the RESET
toggles low and remains low
until proper output voltage regulation is restored. And finally, a
RESET
signal is issued if the regulator does not receive a Watchdog
signal within the Wake Up period.
The RESET
pulse width, Wake Up signal frequency, and Wake Up
delay time are all set by one external capacitor C
Delay
.
The regulator is protected against short circuit, over voltage, and
thermal runaway conditions. The device can withstand 74 V peak
transients, making it suitable for use in automotive environments.
Features
• 5.0 V ± 2%/100 mA Output Voltage
• Micropower Compatible Control Functions
♦ Wake Up
♦ Watchdog
♦ RESET
• Low Dropout Voltage: 400 mV @ 100 mA
• Low Sleep Mode Quiescent Current (400 mA Typ)
• Protection Features
♦ Thermal Shutdown
♦ Short Circuit
♦ 74 V Peak Transient Capability
♦ Reverse Transient (−50 V)
• Internally Fused Leads in SO−14L and SO−16L Packages
• These are Pb−Free Devices
SO−16L
DWF SUFFIX
CASE 751G
1
16
D
2
PAK−7
DPS SUFFIX
CASE 936AB
1
7
http://onsemi.com
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
ORDERING INFORMATION
1
14
SOIC−14
D SUFFIX
CASE 751A
See general marking information in the device marking
section on page 2 of this data sheet.
DEVICE MARKING INFORMATION
CS8151
http://onsemi.com
2
PIN CONNECTIONS AND MARKING DIAGRAMS
V
IN
V
OUT
NC
Sense
WDI
GND
GND
GND
GND
GND
Wake Up
NC
RESET
NC
Delay
NC
CS8151G
AWLYWW
SO−16L
CASE 751G
CS8151
AWLYYWWG
161
114
NC
GND
GND
GND
Sense
V
OUT
Delay
RESET
Wake Up
GND
GND
GND
WDI
VIN
SO−14L
CASE 751A
A = Assembly Location
WL = Wafer Lot
Y, YY = Year
WW = Work Week
G = Pb−Free Package
D
2
PAK−7
CASE 936AB
CS
8151
AWLYWWG
1
Tab = GND
Pin 1. V
OUT
2. V
IN
3. WDI
4. GND
5. Wake Up
6. RESET
7. Delay
Figure 1. Block Diagram
V
IN
Delay
WDI
RESET
V
OUT
Wake Up
Sense
GND
Overvoltage
Shutdown
Current Source
(Circuit Bias)
Current
Limit
Sense
Wake Up
Circuit
+ −
Timing
Circuit
Watchdog
Circuit
Thermal
Shutdown
Falling Edge
Detector
Bandgap
Reference
RESET
Circuit
Error
Amplifier
V
OUT
V
OUT
Internally
connected
on D
2
PAK
CS8151
http://onsemi.com
3
MAXIMUM RATINGS*
Rating Value Unit
Power Dissipation Internally Limited −
Output Current (V
OUT
, RESET, Wake Up) Internally Limited −
Reverse Battery −15 V
Peak Transient Voltage (60 V Load Dump @ V
IN
= 14 V) +74 V
Maximum Negative Transient (t < 2.0 ms) −50 V
ESD Susceptibility (Human Body Model) 2.0 kV
ESD Susceptibility (Machine Model) 200 V
Logic Inputs/Outputs −0.3 to +6.0 V
Storage Temperature Range −55 to +150 °C
Lead Temperature Soldering Wave Solder (through hole styles only) (Note 1)
Reflow (SMD styles only) (Notes 2 & 3)
260 peak
240 peak
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. 10 seconds max
2. 60 seconds max above 183°C
3. −5°C / +0°C allowable conditions
*The maximum package power dissipation must be observed
ELECTRICAL CHARACTERISTICS (−40°C ≤ T
A
≤ 125°C, −40°C ≤ T
J
≤ 150°C, 6.0 V ≤ V
IN
≤ 26 V, 100 mA ≤ I
OUT
≤ 100 mA,
C
2
= 47 mF (ESR < 8.0 W), C
Delay
= 0.1 mF; unless otherwise specified.)
Characteristic Test Conditions Min Typ Max Unit
Output Section
Output Voltage, V
OUT
9.0 V < V
IN
< 16 V
6.0 V < V
IN
< 26 V, 0 < I
OUT
< 100 mA
4.90
4.85
5.0
5.0
5.10
5.15
V
V
Dropout Voltage (V
IN
− V
OUT
) I
OUT
= 100 mA
I
OUT
= 100 mA
−
−
400
100
600
150
mV
mV
Load Regulation
V
IN
= 14 V, 100 mA < I
OUT
< 100 mA
− 10 50 mV
Line Regulation I
OUT
= 1.0 mA, 6.0 V < V
IN
< 26 V − 10 50 mV
Ripple Rejection 7.0 V < V
IN
< 17 V @ f = 120 Hz, I
OUT
= 100 mA 60 75 − dB
Current Limit V
OUT
= 4.5 V 100 250 − mA
Thermal Shutdown − 150 180 210 °C
Overvoltage Shutdown V
OUT
< 1.0 V 50 56 62 V
Quiescent Current
I
OUT
= 200 mA (Sleep)
I
OUT
= 50 mA
I
OUT
= 100 mA (Wake Up)
−
−
−
0.4
4.0
12
0.75
−
20
mA
mA
mA
Reverse Current V
OUT
= 5.0 V, V
IN
= 0 V − 1.0 1.5 mA
RESET
Threshold High (RTH) RTH V
OUT
Increasing V
OUT
− 0.3 − V
OUT
− 0.04 V
Threshold Low (RTL) RTL V
OUT
Decreasing 4.5 4.7 4.91 V
Hysteresis RTH − RTL 150 200 250 mV
Output Low
1.0 V < V
OUT
RTL, I
OUT
= 25 mA
− 0.2 0.8 V
Output High
I
OUT
= 25 mA, V
OUT
> RTH
3.8 4.2 5.1 V
P1-P3P4-P6P7-P9P10-P12P13-P14

CS8151YDWF16

Mfr. #:
Buy CS8151YDWF16
Manufacturer:
ON Semiconductor
Description:
LDO Voltage Regulators 5V 100mA w/WatchDog
Lifecycle:
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