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參數資料
| 型號： | CS8127 |
| 廠商： | ZF Electronics Corporation |
| 英文描述： | 5V Linear Controller/Driver |
| 中文描述： | 5V的線性控制器/驅動器 |
| 文件頁數： | 1/6頁 |
| 文件大小： | 163K |
| 代理商： | CS8127 |
1
The CS8127 contains all the necessary
control circuitry to implement a 5V lin-
ear regulator. An external pass device is
used to produce superior performance
compared to conventional monolithic
regulators. The CS8127 with a TIP42
PNP transistor typically provides a
100mV dropout voltage at 500mA,
increasing to 350mV at 3A. Quiescent
current at 500mA is only 5mA.
Monolithic regulators cannot approach
these figures because their power tran-
sistors do not provide the high beta and
excellent saturation characteristics at
high currents. The CS8127 is compatible
with a wide variety of external transis-
tors, allowing flexibility for thermal,
space, and cost management.
The CS8127 includes thermal shutdown,
externally programmable current limit,
and over-voltage shutdown, making it
suitable for use in automotive and
switching regulator post regulator appli-
cations. An optional external RC filter
added to the CS8127 supply lead pro-
vides EMC hardening in addition to the
on-chip EMC hardening. The SENSE
lead allows remote sensing of the output
voltage for improved regulation.
An active microprocessor RESET func-
tion is included on-chip with externally
programmable delay time. During
power-up, or after detection of any error
in the regulated output, the RESET lead
will remain in the low state for the dura-
tion of the delay. Types of errors include
short circuit, low input voltage, over-
voltage shutdown, thermal shutdown,
or others that cause the output to
become unregulated. This function is
independent of the input voltage and
will function correctly with an output
voltage as low as 1V. Hysteresis is
included in both the reset and delay
comparators for noise immunity and to
prevent oscillations. A latching dis-
charge circuit is used to discharge the
delay capacitor, even when triggered by
a relatively short fault condition. This
circuit improves upon the commonly
used SCR structure by providing
improved noise immunity and full
capacitor discharge (0.2V typ).
Features
+
-
-
+
+
IC
Reference
Gnd
PRE-
REGULATOR
IC
Power
Gnd
Regulated Supply
for Circuit Bias
10
A
Delay
Current
Delay
Ref Gnd
Pwr Gnd
Thermal
Shutdown
Bandgap
Reference
Reset
Comparator
Latching
Q S
R
V
dis
Delay
Comparator
1.25V
Error
Amp
PULLUP
V
IN
Sense
-
-
+
RESET
Over
Voltage
Shutdown
50
m
A
V
OUT
I
Externally Set Delay for
Reset
I
60V Peak Transient
Capability
I
Internal Thermal
Overload Protection
I
3% Output Accuracy
I
Active RESET
I
Noise Immunity
I
On Chip EMC Hardening
Protection Incorporated
I
Externally Set Current
Limit
Package Options
8L SO & 8L PDIP
C
5V Linear Controller/Driver
Description
1
V
IN
2
3
4
Sense
Delay
V
OUT
Pwr Gnd
Pullup
Ref Gnd
8
7
6
5
RESET
CS8127
Block Diagram
A
Company
¨
Rev. 2/12/99
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: info@cherry-semi.com
Web Site: www.cherry-semi.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| CS8127/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:5V Linear Controller/Driver |
| CS8127IP1 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FIBER OPTIC TRANSCEIVER |
| CS8127YD8 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CS8127YDR8 | 制造商:CHERRY 制造商全稱:CHERRY 功能描述:5V Linear Controller/Driver |
| CS8127YN8 | 制造商:CHERRY 制造商全稱:CHERRY 功能描述:5V Linear Controller/Driver |
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