Datasheet

 
 
 
SLUS507D − JANUARY 2002 − REVISED NOVEMBER 2005
4
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ELECTRICAL CHARACTERISTICS
over recommended operating temperature range, T
A
= −40_C to 85_C, V
DD
= 5.0 V, all parameters measured at zero
power dissipation (unless otherwise noted)
current limit
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
I
SINK
ILIM sink current
V
DD
= 5 V 11 15 19
A
I
SINK
ILIM sink current
V
DD
= 2.25 V
9.5 13.0 16.5
µA
V
OS
Offset voltage SW vs ILIM
(1)
2.25 V ≤ V
DD
≤ 5.00 −20 0 20 mV
V
ILIM
Input voltage range 2 VDD V
t
ON
Minimum HDRV pulse time in overcurrent V
DD
= 3.3 V 200 300 ns
SW leading edge blanking pulse in over-
current detection
100 ns
t
SS
Soft-start capacitor cycles as fault timer
(1)
6
rectifier zero current comparator
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
SW
Sense voltage to turn off
rectifier
TPS40000
TPS40002
LDRV output OFF −15 −7 −2 mV
SW leading edge blanking pulse in zero
current detection
75 ns
predictive delay
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
SWP
Sense threshold to modulate delay time −350 mV
T
LDHD
Maximum delay modulation range time LDRV OFF − to − HDRV ON 50 75 100 ns
Predictive counter delay time per bit LDRV OFF − to − HDRV ON 3.0 4.5 6.2 ns
T
HDLD
Maximum delay modulation range HDRV OFF − to − LDRV ON 40 65 90 ns
Predictive counter delay time per bit HDRV OFF − to − LDRV ON 2.4 4.0 5.6 ns
shutdown
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
SD
Shutdown threshold voltage Outputs OFF 0.09 0.13 0.205 V
V
EN
Device active threshold voltage 0.14 0.17 0.235 V
soft start
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
I
SS
Soft-start source current Outputs OFF 2.0 3.7 5.4 µA
V
SS
Soft-start clamp voltage 1.1 1.5 1.9 V
bootstrap
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
R
BOOT
Bootstrap switch resistance
V
DD
= 3.3 V 50 100
Ω
R
BOOT
Bootstrap switch resistance
V
DD
= 5 V 35 70
Ω
(1) Ensured by design. Not production tested.
(2) At V
DD
input voltage of 2.25 V, derate the maximum duty cycle by 3%.