参数资料
型号: LT1185CQ#TRPBF
厂商: Linear Technology
文件页数: 4/16页
文件大小: 0K
描述: IC REG LDO NEG ADJ 3A DDPAK-5
产品培训模块: More Information on LDOs
标准包装: 750
稳压器拓扑结构: 负,可调式
输出电压: -2.5 V ~ -25 V
输入电压: -4.2 V ~ -35 V
电压 - 压降(标准): 0.67V @ 3A
稳压器数量: 1
电流 - 输出: 3A
电流 - 限制(最小): 可调式
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: TO-263-6,D²Pak(5 引线+接片),TO-263BA
供应商设备封装: D2PAK-5
包装: 带卷 (TR)
LT1185
TYPICAL PERFOR A CE CHARACTERISTICS
Feedback Pin Voltage
5
Internal Current Limit
12
Quiescent Ground Pin Current*
2.41
Temperature Drift
4
3
GUARANTEED
LIMIT
10
8
I LOAD = 0
T J = 25 ° C
*DOES NOT INCLUDE REF CURRENT
OR OUTPUT DIVIDER CURRENT
2.40
2.39
2.38
6
2.37
2
TYPICAL
4
2.36
1
GUARANTEED
LIMIT
2
V OUT = 5V
2.35
2.34
0
0
TEST POINTS
5 10
15 20
25
30
0
0
5
10
15
20
25
30
35
2.33
–50 –25
0
25
50
75
100 125 150
INPUT-OUTPUT DIFFERENTIAL (V)
LT1185 ? TPC01
INPUT VOLTAGE (V)
LT1185 ? TPC02
JUNCTION TEMPERATURE ( ° C)
LT1185 ? TPC03
Ground Pin Current
Ripple Rejection vs Frequency
160
T J = 25 ° C
–100
140
–80
120
ALL OUTPUT
100
80
60
REGULATOR JUST AT
DROPOUT POINT
–60
–40
VOLTAGES
WITH 0.05 μ F
ACROSS R2
V OUT = 5V
40
20
V IN – V OUT = 5V
–20
V IN – V OUT = 1.5V
0
0
1
2
3
4
0
100
1k
10k 100k
1M
LOAD CURRENT (A)
Load Transient Response
LT1185 ? TPC04
10
FREQUENCY (Hz)
Output Impedance
LT1185 ? TPC05
100mV
C OUT = 2.2 μ F, ESR = 1 ?
C OUT = 2.2 μ F, ESR = 2 ?
V OUT = 5V
I OUT = 1A
1
0.1
0.01
OUTPUT IMPEDANCE IS
SET BY OUTPUT CAPACITOR
ESR IN THIS REGION
? I LOAD
0.1A t r , f ≤ 100ns
V OUT = 5V
I OUT = 1A
C OUT = 2.2 μ F
0
2
4
6
8 10
TIME ( μ s)
12
14
16
0.001
1k
10k 100k
FREQUENCY (Hz)
1M
LT1185 ? TPC06
LT1183 ? TPC07
1185ff
4
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