LM27761
www.ti.com.cn
ZHCSEO7C –OCTOBER 2015–REVISED JANUARY 2017
Typical Characteristics (接下页)
Unless otherwise specified, TA = 25°C, VIN = 5 V, and values for C1 to C4 are as shown in the 典型应用.
-3.2
-3.25
-3.3
-3.35
-3.4
0.001
VIN = 5 V
0.01
IOUT (A)
0.1
0.25
D011
VIN = 3 V
VOUT = –1.8 V
IOUT = 250 mA
VOUT = –3.3 V
R1 = 856 kΩ
R2 = 500 kΩ
图 8. Output Voltage Ripple
图 7. Load Regulation
VIN = 5.5 V
VOUT = –5 V
IOUT = 250 mA
图 9. Output Voltage Ripple
图 10. Enable High
100
90
80
70
60
50
40
30
20
10
0
VOUT = -5 V
VOUT = -3 V
VOUT = -3.3 V
VOUT = -4.5 V
0
50
100
150
200
250
IOUT (mA)
D008
图 12. LDO Dropout Voltage vs IOUT
图 11. Enable Low
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