LM27761
ZHCSEO7C –OCTOBER 2015–REVISED JANUARY 2017
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6.6 Typical Characteristics
Unless otherwise specified, TA = 25°C, VIN = 5 V, and values for C1 to C4 are as shown in the 典型应用.
3.5
3
2
1.8
1.6
1.4
1.2
1
2.5
2
1.5
1
0.8
0.6
0.4
0.2
0
0.5
0
VIN = 3 V, VOUT = -1.8 V
VIN = 5.5 V, VOUT = -5 V
0
50
100
150
200
250
2.7
3.2
3.7
4.2
4.7
5.2
5.5
Output Current (mA)
VIN (V)
D001
D002
VOUT = –1.8 V
IOUT = 100 mA
图 1. Output Voltage Ripple vs Output Current
图 2. Output Voltage Ripple vs Input Voltage
500
450
400
350
300
250
200
150
100
50
10
9
8
7
6
5
4
3
2
1
0
25°C
85°C
-40°C
25èC
85èC
-40èC
0
2.7
3.2
3.7
4.2
4.7
5.2
5.5
2.7
3.2
3.7
4.2
4.7
5.2
5.7
VIN (V)
VIN (V)
D015
D016
EN = 1
ILOAD = 0 mA
EN = 0
图 3. Quiescent Current
图 4. Shutdown Current
-1.75
-4.8
-4.85
-4.9
25°C
85°C
-40°C
-1.77
-1.79
-1.81
-1.83
-1.85
-4.95
-5
-5.05
-5.1
25°C
85°C
-40°C
-5.15
-5.2
0.001
0.01
0.1
0.25
0.001
0.01
0.1
1
IOUT (A)
IOUT (A)
D006
D007
VIN = 3 V
R1 = 237 kΩ
VOUT = –1.8 V
VIN = 5.5 V
R1 = 1.54 MΩ
VOUT = –5 V
R2 = 500 kΩ
R2 = 500 kΩ
图 5. Load Regulation
图 6. Load Regulation
6
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