Datasheet

TPS51916
www.ti.com SLUSAE1D –DECEMBER 2010–REVISED JUNE 2012
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range, V
V5IN
= 5 V, VLDOIN is connected to VDDQ output, V
MODE
= 0 V, V
S3
= V
S5
= 5 V
(unless otherwise noted)
PARAMETER TEST CONDITION MIN TYP MAX UNIT
VDDQ MOSFET DRIVER
Source, I
DRVH
= –50 mA 1.6 3.0
R
DRVH
DRVH resistance
Sink, I
DRVH
= 50 mA 0.6 1.5
Ω
Source, I
DRVL
= –50 mA 0.9 2.0
R
DRVL
DRVL resistance
Sink, I
DRVL
= 50 mA 0.5 1.2
DRVH-off to DRVL-on 10
t
DEAD
Dead time ns
DRVL-off to DRVH-on 20
INTERNAL BOOT STRAP SW
V
FBST
Forward Voltage V
V5IN-VBST
, T
A
= 25°C, I
F
= 10 mA 0.1 0.2 V
I
VBSTLK
VBST leakage current T
A
= 25°C, V
VBST
= 33 V, V
SW
= 28 V 0.01 1.5 μA
LOGIC THRESHOLD
I
MODE
MODE source current 14 15 16 μA
MODE 0-1 109 129 149
MODE 1-2 235 255 275
MODE 2-3 392 412 432
V
THMODE
MODE threshold voltage MODE 3-4 580 600 620 mV
MODE 4-5 829 854 879
MODE 5-6 1202 1232 1262
MODE 6-7 1760 1800 1840
V
IL
S3/S5 low-level voltage 0.5
V
IH
S3/S5 high-level voltage 1.8 V
V
IHYST
S3/S5 hysteresis voltage 0.25
I
ILK
S3/S5 input leak current –1 0 1 μA
SOFT START
Internal soft-start time, C
VREF
= 0.1 μF,
t
SS
VDDQ soft-start time 1.1 ms
S5 rising to V
VDDQSNS
> 0.99 × V
REFIN
PGOOD COMPARATOR
PGOOD in from higher 106% 108% 110%
PGOOD in from lower 90% 92% 94%
V
THPG
VDDQ PGOOD threshold
PGOOD out to higher 114% 116% 118%
PGOOD out to lower 82% 84% 86%
I
PG
PGOOD sink current V
PGOOD
= 0.5 V 3 5.9 mA
Delay for PGOOD in 0.8 1 1.2 ms
t
PGDLY
PGOOD delay time
Delay for PGOOD out, with 100 mV over drive 330 ns
t
PGSSDLY
PGOOD start-up delay C
VREF
= 0.1 μF, S5 rising to PGOOD rising 2.5 ms
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