www.ti.com
TPS54610
SLVS398D − JUNE 2001 − REVISED JULY 2003
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range unless otherwise noted
PARAMETER
SUPPLY VOLTAGE, VIN
Input voltage range, VIN
fs = 350 kHz, SYNC
≤
0.8 V, RT open,
PH pin open
I(Q)
Quiescent current
fs = 550 kHz, SYNC
≥
2.5 V, RT open,
PH pin open
Shutdown, SS/ENA = 0 V
UNDER VOLTAGE LOCK OUT
Start threshold voltage, UVLO
Stop threshold voltage, UVLO
Hysteresis voltage, UVLO
Rising and falling edge deglitch, UVLO(1)
BIAS VOLTAGE
Output voltage, VBIAS
Output current, VBIAS (2)
CUMULATIVE REFERENCE
Vref
Accuracy
REGULATION
Line regulation(1)(3)
Load regulation(1)(3)
OSCILLATOR
Internally set—free running frequency
SYNC
≤
0.8 V,
SYNC
≥
2.5 V,
RT open
RT open
280
440
252
460
663
2.5
0.8
50
330
0.75
1
200
90%
700
350
550
280
500
700
420
660
308
540
762
V
V
ns
kHz
V
V
ns
kHz
kHz
IL = 3 A, fs = 350 kHz, TJ = 85°C
IL = 3 A, fs = 550 kHz, TJ = 85°C
IL = 0 A to 6 A, fs = 350 kHz, TJ = 85°C
IL = 0 A to 6 A, fs = 550 kHz, TJ = 85°C
0.882
0.891
0.900
0.04
0.04
0.03
0.03
%/A
%/V
V
I(VBIAS) = 0
2.70
2.80
2.90
100
V
µA
2.70
0.14
2.95
2.80
0.16
2.5
3.0
V
V
V
µs
3.0
11
16
1
6.0
15.8
23.5
1.4
mA
V
TEST CONDITIONS
MIN
TYP
MAX
UNIT
RT = 180 kΩ (1% resistor to AGND)(1)
Externally set—free running frequency range
High level threshold, SYNC
Low level threshold, SYNC
Pulse duration, external synchronization,
SYNC(1)
Frequency range, SYNC(1)
Ramp valley(1)
Ramp amplitude (peak-to-peak)(1)
Minimum controllable on time(1)
Maximum duty cycle
(1) Specified by design
(2) Static resistive loads only
(3) Specified by the circuit used in Figure 10
RT = 100 kΩ (1% resistor to AGND)
RT = 68 kΩ (1% resistor to AGND)(1)
3
TI [ TEXAS INSTRUMENTS ]
