L6920 查看數據表（PDF） - STMicroelectronics
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L6920 Datasheet PDF : 13 Pages
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L6920
Table 4. Electrical Characteristcs
(Vin = 2V, FB = GND, Tamb = -40°C to 85°C and Tj < 125°C unless otherwise specified)
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
VCC SECTION
Vin Minimum operating Input Voltage
0.6
V
Vin Minimum Start Up Input Voltage
1
V
Iq
Quiescent Current
Il =0 mA, FB = 1.4V, Vout = 3.3V
LBI = SHDN = 2V, Tj = Tamb
9
15
µA
Isd Shut Down Current
Il =0 mA, FB = 1.4V, Vout = 5V
LBI = SHDN = 2V, Tj = Tamb
Vin = 5V, Il =0 mA
11
18
µA
0.1
1
µA
Irev Reverse battery current
Vin = -4V, Tj = Tamb
0.1
2
µA
POWER SECTION
Ron-N Active switch ON resistance
120 250 mΩ
Ron-P Synchronous switch ON
resistance
120 250 mΩ
CONTROL SECTION
Vout Output voltage
FB = OUT, Il =0 mA
3.2
3.3
3.4
V
FB = GND, Il =0 mA
4.9
5
5.1
V
Output voltage range
External divider
2
5.2
V
VLBI LBI threshold
0°C < Tj < 70°C
1.18 1.23 1.27
V
1.205 1.23 1.255 V
VLBO LBO logic LOW
Isink < 250µA
0.2
0.4
V
Ilim LX switch current limit
0.8
1
1.2
A
Tonmax Maximum on time
Vout = 2V to 5.3V
3.75
5
6.25 µs
Toffmin Minimum off time
Vout = 2V to 5.3V
0.75
1
1.25 µs
SHDN SHDN logic LOW
0.2
V
SHDN logic HIGH
0.6
V
Vref Reference Voltage
1.18 1.23 1.27
V
3/13
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