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L6925 数据表(PDF) 3 Page - STMicroelectronics

部件名 L6925
功能描述  HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR
PDF  5 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L6925 数据表(HTML) 3 Page - STMicroelectronics

  L6925 Datasheet HTML 1Page - STMicroelectronics L6925 Datasheet HTML 2Page - STMicroelectronics L6925 Datasheet HTML 3Page - STMicroelectronics L6925 Datasheet HTML 4Page - STMicroelectronics L6925 Datasheet HTML 5Page - STMicroelectronics  
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L6925D
ELECTRICAL CHARACTERISTICS (TJ = 25°C, VCC = 3.6V unless otherwise specified)
(*) Guaranteed by design
Symbol
Parameter
Test Condition
Min
Typ
Max
Unit
Vcc
Operating input voltage
After Turn On
2.7
5.5
V
Vcc ON
Turn On threshold
2.8
V
Vcc OFF
Turn Off threshold
2.65
V
Vcc hys
Hysteresis
150
mV
Rp
High side Ron
Vcc = 3.6V, Ilx =100mA
240
m
Ω
Rn
Low side Ron
Vcc = 3.6V, Ilx =100mA
215
m
Ω
Ilim
Peak current limit
Vcc = 3.6V
1.2
A
Valley current limit
Vcc = 3.6V
1.4
A
Vout
Output voltage range
0.6
Vcc
V
fosc
Oscillator frequency
600
KHz
fsync
Sync mode clock (*)
500
1400
KHz
DC CHARACTERISTICS
Iq
Quiescent current
(low noise mode)
Vsync = 0V, no load,
VFB > 0.6V
230
µA
Quiescent current
(low cunsumption mode)
Vsync = Vcc, no load,
VFB > 0.6V
25
µA
Ish
Shutdown current
Vcc < 2.7V, VFB > 0.6V
0.2
µA
Ilx
LX leakage current (*)
Vcc < 2.7V, VLX = Vcc
1
µA
Vcc < 2.7V, VLX = 0V
1
µA
ERROR AMPLIFIER CHARACTERISTICS
Vfb
Voltage feedback
0.593
0.6
0.607
V
Ifb
Feedback input current (*)
VFB = 0.6V
25
nA
SYNC/MODE FUNCTION
Vsync_H
Sync mode threshold high
1.3
V
Vsync_L
Sync mode threshold low
0.5
V
LB SECTION
VLBI
LBI Threshold
0.6
V
VLBO
LBO Logic Low
Isink = 1mA, Vcc = 3.6V,
VLBI < 0.6V
0.2
0.4
V
ILK-LBO
LBO Leakage Current (*)
V LBO = 3.6V, Vcc = 3.6V,
VLBI > 0.6V
50
nA
PROTECTIONS
HOVP
Hard overvoltage threshold
10
%Vout



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