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L6926D 数据表(PDF) 3 Page - STMicroelectronics

部件名 L6926D
功能描述  HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR
PDF  8 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L6926D 数据表(HTML) 3 Page - STMicroelectronics

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L6926D
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
5.5
V
Vcc ON
Turn On threshold
2.2
V
Vcc OFF
Turn Off threshold
2
V
Vcc hys
Hysteresis
100
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
Vfb
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
RUN to GND, Vcc = 5.5V
0.2
µA
Ilx
LX leakage current (*)
RUN to GND, VLX = 5.5V,
Vcc = 5.5V
1
µA
RUN to GND, VLX = 0V,
Vcc = 5.5V
1
µA
ERROR AMPLIFIER CHARACTERISTICS
Vfb
Voltage feedback
0.593
0.6
0.607
V
Ifb
Feedback input current (*)
VFB = 0.6V
25
nA
RUN
Vrun_H
RUN threshold high
1.3
V
Vrun_L
RUN threshold low
0.4
V
Irun
RUN input current (*)
25
nA
SYNC/MODE FUNCTION
Vsync_H
Sync mode threshold high
1.3
V
Vsync_L
Sync mode threshold low
0.5
V
PGOOD SECTION
VPGOOD
Power Good Threshold
VOUT = Vfb
90
%Vout
∆VPGOOD
Power Good Hysteresis
VOUT = Vfb
4%Vout
VPgood(low)
Power Good Low Voltage
Run to GND
0.4
V
ILK-PGOOD
Power Good Leakage Current
(*)
VPGOOD = 3.6V
50
nA
PROTECTIONS
HOVP
Hard overvoltage threshold
VOUT = Vfb
10
%Vout



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