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參數資料
| 型號： | CS8128YN8 |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件頁數： | 1/6頁 |
| 文件大小： | 127K |
| 代理商： | CS8128YN8 |
1
The CS8128 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 CS8128 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 CS8128 is compatible
with a wide variety of external transis-
tors, allowing flexibility for thermal,
space, and cost management.
The CS8128 includes thermal shutdown
and externally programmable current
limit and over-voltage shutdown, mak-
ing it suitable for use in automotive and
switching regulator post regulator appli-
cations. An optional external RC filter
added to the CS8128 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
PRE-
REGULATOR
IC
Power
Gnd
Regulated Supply
for Circuit Bias
μ
A
10
Current
Delay
Ref Gnd
Pwr Gnd
Thermal
Bandgap
Reference
Reset
Comparator
Latching
Q S
R
V
dis
Delay
1.25V
Error
Amp
SHUTDOWN
V
OUT
V
IN
Sense
-
Over
Voltage
-
+
RESET
I
Externally Set Delay for
Reset
60V Load Dump
Protection
Internal Thermal
Overload Protection
3% Output Accuracy
Active RESET
Noise Immunity
On Chip EMC Hardening
Protection Incorporated
Externally Set Current
Limit
Externally Set
Overvoltage Shutdown
I
I
I
I
I
I
I
I
Package Options
8L SO & 8L PDIP
C
5V Linear Controller/Driver
Description
1
V
IN
2
3
4
Sense
Delay
V
OUT
Pwr Gnd
SHUTDOWN
Ref Gnd
8
7
6
5
RESET
CS8128
Block Diagram
A
Company
Rev. 6/22/99
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 |
|---|---|
| CS8129 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:AC-DC Offline Switching Controllers/Regulators |
| CS-8129 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:5V 750mA Low Dropout Linear Regulator with Lower RESET Threshold |
| CS8129/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:5V， 750mA Low Dropout LinearRegulator with Lower RESETbar Threshold |
| CS-8129DW16 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Fixed Voltage Regulator |
| CS-8129T5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Fixed Voltage Regulator |
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