TPS56528
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SLVSBV3A –APRIL 2013–REVISED APRIL 2013
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range, (unless otherwise noted)
MIN
4.5
MAX
18
UNIT
VIN
Supply input voltage range
V
VBST
–0.1
–0.1
–0.1
–0.1
–0.1
–0.1
–1.8
–3
24
VBST (10 ns transient)
27
VBST(vs SW)
6.0
5.7
18
PG
VI
Input voltage range
EN
V
VFB
5.5
18
SW
SW (10 ns transient)
GND
21
–0.1
–0.1
0
0.1
5.7
5
VO
IO
Output voltage range
VREG5
V
Output Current range
IVREG5
mA
°C
°C
TA
TJ
Operating free-air temperature
Operating junction temperature
–40
–40
85
150
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range, VIN = 12 V (unless otherwise noted)
PARAMETER
SUPPLY CURRENT
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIN current, TA = 25°C, EN = 5 V,
VFB = 0.7 V
IVIN
Operating - non-switching supply current
170
3.8
350
10
μA
IVINSDN
Shutdown supply current
VIN current, TA = 25°C, EN = 0 V
µA
LOGIC THRESHOLD
EN high-level input voltage
EN
1.6
V
V
VEN
REN
EN low-level input voltage
EN pin resistance to GND
EN
0.6
VEN = 12 V
180
350
700
kΩ
VFB VOLTAGE AND DISCHARGE RESISTANCE
TA = 25°C, VO = 1.05 V, IO = 10 mA, advanced
Eco-mode™ operation
606
600
mV
mV
TA = 25°C, VO = 1.05 V, continuous mode
operation
VFBTH
VFB threshold voltage
VFB input current
593
588
607
TA = -40 to 85°C, VO = 1.05 V, continuous
mode operation(1)
600
0
612
mV
µA
IVFB
SW DISCHARGE
VFB = 0.7 V, TA = 25°C
±0.15
IDISCHG
SW discharge current
EN = 0 V, SW = 1 V, TA = 25°C
1.0
1.5
5.5
mA
VREG5 OUTPUT
TA = 25°C, 6.0 V < VIN < 18 V,
0 < IVREG5 < 5 mA
VVREG5
VREG5 output voltage
5.2
20
5.7
V
IVREG5
Output current
VIN = 6 V, VREG5 = 4.0 V, TA = 25°C
mA
MOSFET
High side switch resistance
Low side switch resistance
25°C, VBST - SW = 5.5 V
25°C
68
37
mΩ
mΩ
RDS(on)
CURRENT LIMIT
Iocl
Current limit
L out = 1.5 µH(1)
5.5
6.2
7.8
A
(1) Not production tested.
Copyright © 2013, Texas Instruments Incorporated
3
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