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ST755C の電気的特性と機能

ST755CのメーカーはSTMicroelectronicsです、この部品の機能は「Adjustable inverting negative output current mode PWM regulators」です。


製品の詳細 ( Datasheet PDF )

部品番号 ST755C
部品説明 Adjustable inverting negative output current mode PWM regulators
メーカ STMicroelectronics
ロゴ STMicroelectronics ロゴ 




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ST755C Datasheet, ST755C PDF,ピン配置, 機能
ST755C
Adjustable inverting negative output
current mode PWM regulators
Features
2.7V to 11V input to adjustable negative output
conversion
1W guaranteed output power
www.DataSheet4U.com(VI > 4.5V, TA 70°C)
68% typ. efficiency at 6V
Very low quiescent current: 1.2mA in on mode,
10µA in shut down mode
Soft start
Very low noise output
160KHz fixed frequency oscillator
Mixed bipolar-CMOS technology
Description
The ST755 is an adjustable inverting switch-mode
DC-DC regulator with internal Power MOSFET
that generators an adjustable negative output
from a voltage input of 2.7V to 11V, output current
guaranteed at 200mA (for VI > 4.5V, VO = -5V
SO-8
and TA = 0°C to 70°C) and 275mA (typical value
at TA = 25°C, VO = -5V).
A logic controlled shut down pin that interfaces
directly with microprocessor reduces supply
current to only 10mA. Input to Output differential
voltage is limited to VI+|VO|<12.7V. No load
supply current is 1.2mA
Table 1.
Device summary
Part number
ST755C
July 2007
Package
ST755CD-TR
Rev. 5
Packaging
SO-8 (tape & reel)
1/16
www.st.com
16

1 Page





ST755C pdf, ピン配列
ST755C
1 Diagram
Figure 1. Schematic diagram
www.DataSheet4U.com
Diagram
3/16


3Pages


ST755C 電子部品, 半導体
Electrical characteristics
4 Electrical characteristics
ST755C
Table 5.
Symbol
Electrical characteristics (Refer to the test circuits, VCC = 5V, VO = -5.25 to -4.75V,
ILOAD = 0mA, TA = TMIN to TMAX, unless otherwise specified. Typical value are referred at
TA = 25°C)
Parameter
Test conditions
Min. Typ. Max. Unit
VI Input voltage
VO Output voltage
www.DataSheet4U.comIO Output current
ISUPPLY
Supply current (including
switching current)
IOFF Standby current)
ISC Short circuit current)
ΔVO Line regulation
ΔVO Load regulation
VREF Reference voltage
ΔVREF Reference drift
RDSON LX on resistance
ILEAK LX leakage current)
ISH Shutdown pin current)
VIH SHDN input high threshold
VIL SHDN input low threshold
fOSC Oscillator frequency
h Power efficiency
CC
Compensation pin
impedance
VCC = 4.5 to 6.2V, IO =0 to 200mA
VCC = 4.5 to 6.2V, TA = 0 to 70°C
VCC = 4.5 to 6.2V, TA = -40 to 85°C
VCC = 4V, VO = -5V
VCC = 2.7V, VO = -5V
No Load, VSHDN = VCC
No Load, VSHDN = 0V
VCC = 4 to 6.2V
IO = 0 to 200mA
TA = 25°C
TA = TMIN to TMAX
VDS = 10V
IO =100mA
4 11
4.75 5 5.25
200 275
175
175
125
V
V
mA
1.2 3.5 mA
10 100 µA
1.2 A
0.1 %/V
0.003
%/mA
1.18 1.25 1.32
V
50 ppm/°C
0.7 Ω
1 µA
1 µA
2V
0.25 V
160 KHz
68 %
7.5 KΩ
Note:
Do not overload or short the Output to Ground. If the above conditions are observed, the
device may be damaged.
6/16

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共有リンク

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