 English |
|
|
|
|
|
|
|
| TPS542941_16 Datasheet, PDF (4/29 Pages) Texas Instruments – 2A/3A Dual Channel Synchronous Step-Down Switcher with Integrated FET | |||
| |||
| ◁ |
TPS542941
SLVSBI3B â JULY 2012 â REVISED OCTOBER 2013
ELECTRICAL CHARACTERISTICS(1) (continued)
over recommended free-air temperature range, VIN = 12 V (unless otherwise noted)
PARAMETER
CONDITIONS
POWER GOOD
VPGTH
PGx threshold
PG from lower VOx (going high)
PG from higher VOx (going low)
RPG
TPGDLY
PGx pull-down resistance
PGx delay time
VPGx = 0.5 V
Delay for PGx going high
Delay for PGx going low
TPGCOMPSS
UVLO
PGx comparator start-up delay
PGx comparator wake-up delay
VUVREG5
VREG5 UVLO threshold
VREG5 rising
Hysteresis
LOGIC THRESHOLDs
VENH
ENx H-level threshold voltage
VENL
ENx L-level threshold voltage
RENx_IN
ENx input resistance
ENx = 12 V
CURRENT LIMITs
IOCL1
IOCL2
CH1 Current limit
CH2 Current limit
LOUT1 = 2.2 µH (3)
LOUT2 = 1.5 µH(3)
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION (UVP, OVP)
VUVP
Output UVP trip threshold
TUVPDEL
Output UVP delay time
TUVPEN
Output UVP enable delay
THERMAL SHUTDOWN
TSD
Thermal shutdown threshold
measured on VFBx
Shutdown temperature(3)
Hysteresis (3)
(3) Specified by design. Not production tested.
www.ti.com
MIN TYP MAX UNIT
84%
116%
50
75 110
Ω
1.5
ms
2
µs
1.5
ms
3.83
V
0.6
2.0
V
0.4
V
225 450 900
kΩ
2.7 3.9 4.5
A
3.5 4.7 5.4
A
63% 68% 73%
1.5
ms
1.5
ms
155
°C
25
4
Submit Documentation Feedback
Product Folder Links: TPS542941
Copyright © 2012â2013, Texas Instruments Incorporated
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese