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參數(shù)資料
| 型號(hào)： | CS-51221N16 |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大小： | 146K |
| 代理商： | CS-51221N16 |
Description
The CS-51221 is a fixed frequency feed forward voltage mode PWM Controller that contains all
of the features necessary for basic voltage mode operation. This PWM controller has been opti-
mzed for high frequency primary side control operation. In addition, this device includes such
features as: Soft Start, externally programmable pulse-by-pulse current limt protection, accu-
rate duty cycle limt control, less than 75μA startup/sleep current, over and undervoltage pro-
tection, leading edge current sense blanking, thermal shutdown, and bi-directional synchroniza-
tion or sleep mode. The CS-51221 is available in 16 lead PDIP and SO narrow packages.
Enhanced Voltage Mode
PWM Controller
CS-51221
End Uses
Distributed Power Management
DC/DC Converters
TECHNICAL FEATURES
I
Line UVLO Monitoring
I
Programmable Soft Start
I
Leading Edge Current
Sense Blanking
I
Thermal Shutdown
I
Bidirectional Synchronization
I
1MHz Operating
Frequency Capability
I
25ns Driver Rise and
Fall Times
I
3.3V 3% Reference
Voltage Output
I
Overtemperature Protection
I
Parallel Operation of Multiple
Supplies
I
Small Power Supply Area
I
Flexible, Accurate
Overcurrent Protection
FEATURE SHEET
A
Company
www.cherry-semi.com
PACKAGE OPTIONS
16 Lead PDIP and SO Narrow
INTELLIGENCE AND POWER
KEY SPECIFICATIONS
BENEFITS
1
GATE
I
SENSE
SYNC/SLEEP
FF
UV
OV
R
T
C
T
I
SET
V
C
PGnd
V
CC
V
REF
LGnd
SS
COMP
V
FB
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