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PM6680ATR Datasheet(PDF) 9 Page - STMicroelectronics

Part # PM6680ATR
Description  Dual synchronous step-down controller with adjustable output voltages plus LDO
PDF  48 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM6680ATR Datasheet(HTML) 9 Page - STMicroelectronics

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PM6680A
Electrical characteristics
9/48
4
Electrical characteristics
Table 5.
Electrical characteristics
TA = -40 °C to 125 °C, unless otherwise specified. All parameters at operating temperature
extremes are guaranteed by design and statistical analysis (not production tested).
Symbol
Parameter
Test condition
Min
Typ
Max
Unit
Supply section
VIN
Input voltage range
Vout = Vref, LDO5 in regulation
5.5
36
V
VCC
IC supply voltage
4.5
5.5
V
VV5SW
Turn-ON voltage threshold
4.8
4.9
V
Turn-OFF voltage
threshold
4.6
4.75
V
Hysteresis
20
50
mV
VV5SW
Maximum operating range
5.5
V
RDS(on)
LDO5 Internal bootstrap
switch resistance
V5SW > 4.9 V
1.8
3
Ω
OUTx,OUTx
discharge-Mode
On-resistance
18
25
Ω
OUTx, OUTx
discharge-Mode
Synchronous rectifier
Turn-on level
0.20.360.6
V
Pin
Operating power
consumption
FBx > VREF, Vref in regulation,
V5WS to 5V
4mW
Ish
Operating current sunk by
VIN
SHDN connected to GND,
20
30
µA
Isb
Operating current sunk by
VIN
ENx to GND, V5SW to GND
190
250
µA
Shutdown section
VSHDN
Device ON threshold
1.2
1.5
1.7
V
Device OFF threshold
0.8
0.85
0.9
V
Soft start section
Soft start ramp time
2
3.5
ms
Current limit and zero crossing comparator
ICSENSE
Input bias current limit (1)
90
100
110
µA
Comparator offset
VCSENSE - VPGND
-6
6
mV
Zero crossing comparator
offset
VPGND - VPHASE
-1
11
mV
Fixed negative current
limit threshold
VPGND - VPHASE
-120
mV
1.
TA = -25 °C to 125 °C



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