PM6681A STMicroelectronics, PM6681A Datasheet - Page 10

• Manufacturer Part Number: PM6681A
• Description: Dual synchronous step down controller with adjustable LDO
• Manufacturer: STMicroelectronics

Electrical characteristics
5
Table 6.
10/47
Supply section
Shutdown section
soft-start section
Current limit and zero crossing comparator
Symbol
I
R
V
V
CSENSE
DS(on)
V5SW
SHDN
Pin
Ish
Isb
Electrical characteristics
Electrical characteristics
(V
Turn-on voltage threshold
Turn-off voltage threshold
Hysteresis
LDO5 internal bootstrap
switch resistance
OUTx, OUTx
discharge-mode
On-resistance
OUTx, OUTx
discharge-mode
Synchronous rectifier
turn-on level
Operating power
consumption
Operating current sunk by
V
Operating current sunk by
V
Device on threshold
Device off threshold
soft-start ramp time
Input bias current limit
Comparator offset
Zero crossing comparator
offset
Fixed negative current limit
threshold
IN
IN
IN
= 24 V; T
Parameter
J
= 25 °C, unless otherwise specified)
(1)
V5SW > 4.9 V
FBx > VREF, Vref in regulation,
V5WS to 5 V
SHDN connected to GND
ENx to GND, V5SW to GND
V
V
V
CSENSE
PGND
PGND
- V
- V
Test condition
- V
PHASE
PHASE
PGND
Min
4.6
0.2
1.2
0.8
20
90
-6
-1
2
-120
4.75
0.35
0.85
Typ
250
100
4.8
1.8
1.5
50
18
20
Max
380
110
4.9
0.6
1.7
0.9
3.5
25
30
11
3
4
6
PM6681A
Unit
mW
mV
mV
mV
mV
ms
µA
µA
µA
Ω
Ω
V
V
V
V
V