Datasheet

TPS5602
DUAL, FAST, HIGH EFFICIENCY CONTROLLER FOR DSP POWER
SLVS217 – JUNE 1999
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended free-air temperature range, V
CC
= 7 V (unless
otherwise noted) (continued)
5-V internal switch
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
TLH
Threshold voltage
4.2 4.9
V
V
THL
Threshold
voltage
4.1 4.7
V
Rson On-time resistance 2.5 8 Ω
V
hys
Hysteresis 50 250 mV
current limit
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Internal current source 10 15 20 µA
Input offset voltage 2.5 mV
UVLO
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
(TLH)
Threshold voltage
3.6 4.2
V
V
(THL)
Threshold
voltage
3.5 4.1
V
Hysteresis 50 250 mV
driver output
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OUT_u sink current V
O
= 3 V 0.5 1.2
A
OUT_u source current V
O
= 2 V –1 –1.7
A
OUT_d sink current V
O
= 3 V 0.5 1.2
A
OUT_d source current V
O
= 2 V –1 –1.7
A
Rise time
High side driver is GND referenced,
In
p
ut:INV=0V– 3V
C
L
= 2200 pF 25.6
ns
Rise
time
In ut:
INV
=
0
V
–
3
V
,
t
r
/t
f
= 10 ns, Frequency = 200 kHz,
C
L
= 3300 pF 30.8
ns
Fall time
High side driver is GND referenced,
In
p
ut:INV=0V– 3V
C
L
= 2200 pF 23.2
ns
Fall
time
In ut:
INV
=
0
V
–
3
V
,
t
r
/t
f
= 10 ns, Frequency = 200 kHz,
C
L
= 3300 pF 25.2
ns
Softstart
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
I
(CTRL)
Softstart current 1.8 2.5 3 µA
Maximum discharge current 0.92 mA
COMP
†
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Threshold voltage 1 1.1 1.25 V
Turn on
Propa
g
ation dela
y
50% dut
y
c
y
cle,
Frequency = 200 kHz
452
ns
Turn off
gyyy,
No capacitor on COMP or OUT_u pin,
Frequency
=
200
kHz
384
ns
†
The delay time in the table includes the drivers.
oscillator
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Frequency without Ct 202.4 kHz
Frequency with Ct Ct = 100 pF 67.5 kHz