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參數資料
| 型號： | CS5112 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | 1.4 A Switching Regulator with 5.0 V, 100 mA Linear Regulator with Watchdog, /RESET and /ENABLE(1.4A開關穩壓器與5V，100mA線性穩壓器（帶看門狗，使能端與復位端）) |
| 中文描述： | 1.4開關穩壓器具有5.0V的，100毫安線性穩壓器，帶有看門狗，/ RESET和/啟用（1.4A的開關穩壓器與5V的，100mA的線性穩壓器（帶看門狗，使能端與復位端）） |
| 文件頁數： | 1/16頁 |
| 文件大小： | 107K |
| 代理商： | CS5112 |
Semiconductor Components Industries, LLC, 2001
January, 2001 – Rev. 6
1
Publication Order Number:
CS5112/D
CS5112
1.4 A Switching Regulator
with 5.0 V, 100 mA Linear
Regulator with Watchdog,
RESET and ENABLE
The CS5112 is a dual output power supply integrated circuit. It
contains a 5.0 V
±
2%, 100 mA linear regulator, a watchdog timer, a
linear output voltage monitor to provide a Power On Reset (POR) and
a 1.4 A current mode PWM switching regulator.
The 5.0 V linear regulator is comprised of an error amplifier, reference,
and supervisory functions. It has low internal supply current consumption
and provides 1.2 V (typical) dropout voltage at maximum load current.
The watchdog timer circuitry monitors an input signal (WDI) from
the microprocessor. It responds to the falling edge of this watchdog
signal. If a correct watchdog signal is not received within the
externally programmable time, a reset signal is issued.
The externally programmable active reset circuit operates correctly
for an output voltage (V
LIN
) as low as 1.0 V. During power up, or if the
output voltage shifts below the regulation limit, RESET toggles low
and remains low for the duration of the delay after proper output
voltage regulation is restored. Additionally a reset pulse is issued if the
correct watchdog is not received within the programmed time. Reset
pulses continue until the correct watchdog signal is received. The reset
pulse width and frequency, as well as the Power On Reset delay, are set
by one external RC network.
The current mode PWM switching regulator is comprised of an
error amplifier with selectable feedback inputs, a current sense
amplifier, an adjustable oscillator, and a 1.4 A output power switch
with anti–saturation control. The switching regulator can be
configured in a variety of topologies.
The CS5112 is load dump capable and has protection circuitry
which includes current limit on the linear and switcher outputs, and an
overtemperature limiter.
Features
Linear Regulator
– 5.0 V
±
2% @ 100 mA
Switching Regulator
– 1.4 A Peak Internal Switch
– 120 kHz Maximum Switching Frequency
– 5.0 V to 26 V Operating Supply Range
Smart Functions
– Watchdog
– RESET
– ENABLE
Protection
– Overtemperature
– Current Limit
Internally Fused Leads in SO–24L Package
http://onsemi.com
SO–24L
DWF SUFFIX
CASE 751E
1
24
A
WL, L
YY, Y
WW, W = Work Week
= Assembly Location
= Wafer Lot
= Year
MARKING
DIAGRAM
1
CS5112
AWLYYWW
24
PIN CONNECTIONS
GND
RESET
C
Delay
WDI
GND
V
FB1
V
FB2
GND
GND
GND
GND
GND
GND
I
BIAS
V
V
LIN
NC
V
REG
NC
ENABLE
V
IN
1
24
C
OSC
COMP
SELECT
Device
Package
Shipping
ORDERING INFORMATION
CS5112YDWF24
SO–24L
31 Units/Rail
CS5112YDWFR24
SO–24L
1000 Tape & Reel
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| CS5112/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:1.4 A Switching Regulator with 5.0 V， 100mA Linear Regulator with Watchdog， RESETbar and ENABLEbar |
| CS5112BC12 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Converter IC |
| CS5112BC24 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Converter IC |
| CS5112BC7 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Converter IC |
| CS5112EDWF24 | 制造商:CHERRY 制造商全稱:CHERRY 功能描述:1.4A Switching Regulator with 5V, 100mA Linear Regulator with Watchdog, RESET and ENABLE |
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