cs8151 ON Semiconductor, cs8151 Datasheet

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cs8151

Manufacturer Part Number
cs8151
Description
5v, 100ma Low Dropout Linear Regulator With Watchdog, Resetbar, & Wake Up
Manufacturer
ON Semiconductor
Datasheet

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CS8151
5.0 V, 100 mA Low Dropout
Linear Regulator with
Watchdog, RESET,
and Wake Up
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.
Sleep mode. The microprocessor in turn, signals its Wake Up status
back to the CS8151 by issuing a Watchdog signal.
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.
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.
delay time are all set by one external capacitor C
thermal runaway conditions. The device can withstand 74 V peak
transients, making it suitable for use in automotive environments.
Features
© Semiconductor Components Industries, LLC, 2005
September, 2005 − Rev. 15
The CS8151 is a precision 5.0 V, 100 mA micro−power voltage
The CS8151 Wake Up function brings the microprocessor out of
The Watchdog logic function monitors an input signal (WDI) from
RESET is independent of V
The RESET pulse width, Wake Up signal frequency, and Wake Up
The regulator is protected against short circuit, over voltage, and
5.0 V ± 2%/100 mA Output Voltage
Micropower Compatible Control Functions
Low Dropout Voltage: 400 mV @ 100 mA
Low Sleep Mode Quiescent Current (400 mA Typ)
Protection Features
Internally Fused Leads in PDIP−16 and SO−16L Packages
Pb−Free Packages are Available
Wake Up
Watchdog
RESET
Thermal Shutdown
Short Circuit
74 V Peak Transient Capability
Reverse Transient (−50 V)
IN
and operates correctly to an output
Delay
.
1
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
See general marking information in the device marking
section on page 10 of this data sheet.
1
1
1
16
1
16
DEVICE MARKING INFORMATION
7
8
7
1
ORDERING INFORMATION
7
1
http://onsemi.com
1
Publication Order Number:
CASE 936AB
DWF SUFFIX
DPS SUFFIX
TVA SUFFIX
THA SUFFIX
CASE 751G
CASE 821E
CASE 821H
CASE 821J
NF SUFFIX
CASE 626
CASE 648
TO−220−7
TO−220−7
TO−220−7
N SUFFIX
T SUFFIX
D
PDIP−16
SO−16L
PDIP−8
2
PAK−7
CS8151/D

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cs8151 Summary of contents

Page 1

... 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. ...

Page 2

... Wake Up 6. RESET 2 D PAK 7. Delay 7−PIN Current Source (Circuit Bias) Timing Delay Circuit WDI Falling Edge Detector V OUT RESET RESET Circuit CS8151 PIN CONNECTIONS V IN WDI Wake Up RESET PDIP− Delay NC RESET NC Wake Up GND GND GND GND NC WDI Sense ...

Page 3

... V Output High I OUT Current Limit RESET = RESET = 5 Delay Time POR Mode CS8151 Rating = Wave Solder (through hole styles only) (Note 1) Reflow (SMD styles only) (Notes 2 & 3) ≤ 125°C, −40°C ≤ T ≤ 150°C, 6.0 V ≤ ...

Page 4

... V OUT = 25 mA (Sinking) Output Low I OUT = 25 mA (Sourcing) Output High I OUT Current Limit Wake Up = 5.0 V Wake CS8151 (−40°C ≤ T ≤ 125°C, −40°C ≤ T ≤ 150°C, 6.0 V ≤ Test Conditions − − − = 5.0 V → 4.5 V http://onsemi.com 4 ≤ 100 mA ≤ I ≤ ...

Page 5

... Delay Input lead from timing capacitor for RESET and Wake Up signal connection. 7 GND Ground connection. Regulated output voltage 5.0 V ± 2 OUT CS8151 PIN SYMBOL Regulated output voltage 5.0 V ± 2 OUT 9 V Supply voltage to the IC WDI CMOS/TTL compatible input lead. The Watchdog function monitors the falling edge of the incoming signal ...

Page 6

... Figure 3. Error Condition: Watchdog Remains Low and a RESET Is Issued RESET Wake Up WDI V Watchdog OUT Pulse Width POR Watchdog Pulse Width Figure 4. Power Down and Restart Sequence http://onsemi.com CS8151 Duty Cycle = 50% Normal Operation with Varying Watchdog Signal RESET Delay Time Delay Time RTL Power Down POR 6 Wake Up Wake Up Period ...

Page 7

... C Wake Up Period = (4 × 10 RESET Delay Time = (5 × 10 RESET High to Wake Up Delay Time = (2 × 10 Capacitor temperature coefficient and tolerance as well as the tolerance of the CS8151 must be taken into account in order to get the correct system tolerance for each parameter. http://onsemi.com 7 . Delay ...

Page 8

... Output Compensation The capacitor value and type should be based on cost, availability, size and temperature constraints. A tantalum or aluminum electrolytic capacitor is best, since a film or CS8151 APPLICATION NOTES ceramic capacitor with almost zero ESR can cause instability. The aluminum electrolytic capacitor is the least expensive solution, but, if the circuit operates at low temperatures (− ...

Page 9

... R qJA (2) functions of the package type, heatsink and the interface between them. These values appear in heatsink data sheets of heatsink manufacturers. I OUT V OUT OUT C2 CS8151 WDI C RESET Delay GND Wake Up Figure 10. Application Diagram http://onsemi.com 9 : qJA (3) and R are ...

Page 10

... VOUT 100 C VOUT 10 C VOUT 1 C VOUT C VOUT 0.1 0. OUT Figure 11. CS8151 Output Stability with Output Capacitor Change MARKING DIAGRAMS TO−220 SEVEN LEAD T SUFFIX CASE 821E CS 8151 AWLYWWG PAK 7−PIN PDIP−8 DPS SUFFIX N SUFFIX CASE 936AB CASE 626 ...

Page 11

... CS8151YTVA7G CS8151YTHA7 CS8151YTHA7G CS8151YDPS7 CS8151YDPS7G CS8151YDPSR7 CS8151YDPSR7G CS8151CGN8 CS8151CGN8G CS8151YNF16 CS8151YNF16G CS8151YDWF16 CS8151YDWF16G CS8151YDWFR16 CS8151YDWFR16G †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. CS8151 Package TO−220−7 TO− ...

Page 12

... K OPTIONAL CHAMFER SEATING PLANE −Q− 0.356 (0.014 CS8151 PACKAGE DIMENSIONS TO−220−7 T SUFFIX CASE 821E−04 ISSUE 175 TO−220−7 TVA SUFFIX CASE 821J−02 ISSUE A −T− ...

Page 13

... B −Q− 0.356 (0.014 CS8151 PACKAGE DIMENSIONS TO−220−7 THA SUFFIX CASE 821H−02 ISSUE A NOTES: −T− http://onsemi.com 13 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION D DOES NOT INCLUDE INTERCONNECT BAR (DAMBAR) PROTRUSION ...

Page 14

... 10.54 0.415 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. CS8151 PACKAGE DIMENSIONS 2 D PAK−7 (SHORT LEAD) DPS SUFFIX CASE 936AB−01 ISSUE A TERMINAL ...

Page 15

... PACKAGE THERMAL DATA Parameter R ΘJC R ΘJA −A− 0.25 (0.010) M CS8151 PACKAGE DIMENSIONS PDIP−8 N SUFFIX CASE 626−05 ISSUE DIP−8 Typical 52 Typical 100 PDIP−16 NF SUFFIX CASE 648−08 ...

Page 16

... OF THE B DIMENSION AT MAXIMUM MATERIAL CONDITION. MILLIMETERS DIM MIN MAX A 2.35 2.65 A1 0.10 0.25 B 0.35 0.49 C 0.23 0.32 D 10.15 10.45 E 7.40 7.60 e 1.27 BSC H 10.05 10.55 h 0.25 0.75 L 0.50 0. SO−16L Unit °C/W 18 °C qCA ON Semiconductor Website: http://onsemi.com Order Literature: http://www.onsemi.com/litorder For additional information, please contact your local Sales Representative. CS8151/D ...

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