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PM6680 Fiches technique(PDF) 12 Page - STMicroelectronics

No de pièce PM6680
Description  No Rsense dual step-down controller with adjustable voltages for notebook system power
PDF  49 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM6680 Fiches technique(HTML) 12 Page - STMicroelectronics

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Electrical characteristics
PM6680
12/49
4
Electrical characteristics
VIN = 12V, TA = 0°C to 85°C, unless otherwise specified
Table 5.
Electrical characteristics
Symbol
Parameter
Test condition
Min
Typ
Max
Unit
Supply section
VIN
Input voltage range
Vout = Vref, LDO5 in
regulation
5.5
28
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
Rdson
LDO5 internal bootstrap
switch resistance
V5SW > 4.9
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,
14
18
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
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



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