L6925 查看數據表（PDF） - STMicroelectronics
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L6925 Datasheet PDF : 6 Pages
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L6925D
Table 5. ELECTRICAL CHARACTERISTICS (TJ = 25°C, VCC = 3.6V unless otherwise specified)
Symbol
Vcc
Vcc ON
Vcc OFF
Vcc hys
Rp
Rn
Ilim
Parameter
Operating input voltage
Turn On threshold
Turn Off threshold
Hysteresis
High side Ron
Low side Ron
Peak current limit
Valley current limit
Vout
Output voltage range
fosc
Oscillator frequency
fsync
Sync mode clock (*)
DC CHARACTERISTICS
Iq
Quiescent current
(low noise mode)
Quiescent current
(low cunsumption mode)
Ish
Shutdown current
Ilx
LX leakage current (*)
ERROR AMPLIFIER CHARACTERISTICS
Test Condition
After Turn On
Vcc = 3.6V, Ilx =100mA
Vcc = 3.6V, Ilx =100mA
Vcc = 3.6V
Vcc = 3.6V
Vsync = 0V, no load,
VFB > 0.6V
Vsync = Vcc, no load,
VFB > 0.6V
Vcc < 2.7V, VFB > 0.6V
Vcc < 2.7V, VLX = Vcc
Vcc < 2.7V, VLX = 0V
Min
Typ
Max
2.7
5.5
2.8
2.65
150
240
215
1.2
1.4
0.6
Vcc
600
500
1400
Unit
V
V
V
mV
mΩ
mΩ
A
A
V
KHz
KHz
230
µA
25
µA
0.2
µA
1
µA
1
µA
Vfb
Voltage feedback
Ifb
Feedback input current (*)
SYNC/MODE FUNCTION
Vsync_H Sync mode threshold high
Vsync_L Sync mode threshold low
LB SECTION
VFB = 0.6V
0.593 0.6 0.607
V
25
nA
1.3
V
0.5
V
VLBI
VLBO
LBI Threshold
LBO Logic Low
ILK-LBO LBO Leakage Current (*)
PROTECTIONS
HOVP Hard overvoltage threshold
Isink = 1mA, Vcc = 3.6V,
VLBI < 0.6V
V LBO = 3.6V, Vcc = 3.6V,
VLBI > 0.6V
0.6
V
0.2
0.4
V
50
nA
10
%Vout
(*) Guaranteed by design
3/6
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