参数资料
型号: LT1175MPS8#PBF
厂商: Linear Technology
文件页数: 7/20页
文件大小: 0K
描述: IC REG LDO NEG ADJ .5A 8SOIC
标准包装: 100
稳压器拓扑结构: 负,可调式
输出电压: -3.8 V ~ -19.9 V
输入电压: -4.3 V ~ -20 V
电压 - 压降(标准): 0.5V @ 500mA
稳压器数量: 1
电流 - 输出: 500mA
电流 - 限制(最小): 可调式
工作温度: -55°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
LT1175
TYPICAL PERFORMANCE CHARACTERISTICS
25
Shutdown Input Current
2.5
Shutdown Thresholds
15
SHDN Pin Characteristics
20
2.0
POSITIVE THRESHOLD
10
V IN = 25V
CHARACTERISTICS DO NOT
CHANGE SIGNIFICANTLY WITH
TEMPERATURE, SO A SINGLE
CURVE IS SHOWN. POSITIVE
CURRENT FLOWS INTO
15
T J = 25°C
1.5
NEGATIVE THRESHOLD
5
SHDN PIN
T J = 125°C
10
T J = –55°C
1.0
0
IF SHDN PIN IS NEGATIVE WITH
5
0
0.5
0
DEVICE IS OFF
BELOW THRESHOLD
–5
–10
RESPECT TO INPUT VOLTAGE AND
INPUT VOLTAGE IS LESS THAN 15V,
NEGATIVE BREAKOVER POINT WILL
BE ABOUT 8V BELOW –V IN
0
5
10
15
20
25
–50
–25
0
25
50
75
100
125
–25 –20 –15 –10 –5
0
5
10 15 20 25
INPUT VOLTAGE (V)
1175 G07
GND Pin Current
20
TEMPERATURE (°C)
100
1175 G08
Ripple Rejection
SHUTDOWN TO GROUND VOLTAGE (V)
1175 G09
V OUT = 12V
(ADJUSTABLE)
16
80
WITH 0.1μF ACROSS
DIVIDER RESISTOR
12
8
POWER
TRANSISTOR
IN DROPOUT
V IN – V OUT = 2V
T J = 25°C
60
40
V OUT = 12V
(ADJUSTABLE)
V OUT = 5V
(FIXED)
T J = –55°C
4
0
T J = 25°C
V IN – V OUT ≥ 3V
T J = 25°C
20
0
I OUT = 100mA
V IN – V OUT = 2V
C OUT = 1μF TANT
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
10
100
1k 10k
100k
1M
OUTPUT CURRENT (A)
1175 G10
FREQUENCY (Hz)
RIPPLE REJECTION IS RELATIVELY INDEPENDENT OF
INPUT VOLTAGE AND LOAD FOR CURRENTS BETWEEN
25mA AND 500mA. LARGER OUTPUT CAPACITORS DO
NOT IMPROVE REJECTION FOR FREQUENCIES BELOW
50kHz. AT VERY LIGHT LOADS, REJECTION WILL
IMPROVE WITH LARGER OUTPUT CAPACITORS 1175 G11
1175ff
7
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