ST735TC PDF预览

ST735TC

更新时间: 2025-07-23 23:34:51
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 稳压器输出元件
页数 文件大小 规格书
11页 340K
描述
300KHZ -5V/ADJ INVERTING. NEGATIVE OUTPUT CURRENT MODE PWM REGULATOR

ST735TC 数据手册

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ST735S  
ST735T  
300kHz, -5V/ADJ INVERTING, NEGATIVE OUTPUT  
CURRENT-MODE PWM REGULATOR  
CONVERTS +4.0V TO + 6.2V INPUT TO -5V  
OUTPUT (735S) OR +3.5V TO + 9.0V TO A  
NEGATIVE ADJUSTABLE OUTPUT (735T)  
1W GUARANTEED OUTPUT POWER  
72% TYPICAL EFFICIENCY  
0.8mA QUIESCENT CURRENT  
1µA SHUTDOWN MODE  
300KHZ FIXED FREQUENCY OSCILLATOR  
CURRENT MODE PWM CONVERTER  
LOW NOISE AND JITTER  
SOFT START  
SIMPLE APPLICATION CIRCUIT  
UNDERVOLTAGE LOCKOUT (735S)  
DIP-8  
SO-8  
0.8mA and, in shutdown mode it is reduced to  
1µA.  
These power-conserving features, along with high  
efficiency and applications circuits, thaT lend itself  
to minaturization, make the ST735S/ST735T  
excellent in a broad range of on-card, HDD and  
portable equipment applications. These device  
employ a high performance current mode pulse  
with modulation (PWM) control scheme to provide  
tight output voltage regulation and low noise. The  
fixed frequency oscillator is factory trimmed to  
300KHz, allowing for easy noise filtering. The  
regulator in production is tested to guarantee an  
output accuracy within ±5% over all specified  
conditions.  
DESCRIPTION  
The ST735S/ST735T is a Bi-CMOS, inverting  
switch mode DC-DC regulator with internal Power  
MOSFET that generates a fixed -5V (S version) or  
a negative adjustable (T version) output voltage  
from a 4V (3.5V for the 735T) to 6.2V input voltage  
(9V for the 735T); is guaranteed an output current  
of 200mA for inputs greater than 4.5V. The  
quiescent current for this device is typically of  
SCHEMATIC DIAGRAM  
October 2002  
1/11  

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