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TPS652510 View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
TPS652510 4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN THREE DC-DC CONVERTERS WITH INTEGRATED FET TI
Texas Instruments TI
TPS652510 Datasheet PDF : 31 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
TPS652510
www.ti.com
SLVSB30B – SEPTEMBER 2011 – REVISED AUGUST 2013
ELECTRICAL CHARACTERISTICS
TJ = –40°C to 125°C, VIN = 12 V, fSW = 500 kHz (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
INPUT SUPPLY UVLO AND INTERNAL SUPPLY VOLTAGE
VIN
IDDSDN
IDDQ
Input voltage range
Shutdown
Quiescent
Quiescent, forced PWM
EN pin = low for all converters
Converters enabled, no load
Buck1 = 1.2 V
Buck2 = 1.8 V
Buck3 = 3.3 V
TA = 25°C, F_PWM = Low
Converters enabled, no load
F_PWM = High, L = 4.7 µH
4.5
170
600
18
UVLO
UVLODEGLITCH
V3V
I3V
V7V
I7V
V7VUVLO
VIN under voltage lockout
Internal biasing supply
Biasing supply output current
Internal biasing supply
Biasing supply output current
UVLO for internal V7V rail
Rising VIN
Falling VIN
Both edges
ILOAD = 0 mA
VIN = 12 V
ILOAD = 0 mA
VIN = 12 V
Rising V7V
Falling V7V
4.22
4.1
110
3.2
3.3
5.63
6.25
3.8
3.6
V7VUVLO_DEGLITCH
Falling edge
110
BUCK CONVERTERS (ENABLE CIRCUIT, CURRENT LIMIT, SOFT-START AND SWITCHING FREQUENCY)
VIH_ENx
VIH
Enable threshold high
Enable high level
V3p3 = 3.2 V - 3.4 V,
VENx rising
External GPIO
1.55
0.66 x
V3p3
VIL_ENx
Enable treshold low
V3p3 = 3.2 V - 3.4 V,
VENx falling
0.98
VIL
Enable low level
External GPIO
ICHEN
Pull up current enable pin
tD
Discharge time enable pins
ISS
Soft-start pin current source
FSW_BK
Converter switching frequency range
RFSW
Frequency setting resistor
fSW_TOL
Internal oscillator accuracy
FEEDBACK, REGULATION, OUTPUT STAGE
VFB
tON_MIN
RLIMx
ILIM1
Feedback voltage
Minimum on time (current sense
blanking)
Limit resistance range
Buck 1 adjustable current limit range
ILIM2
Buck 2adjustable current limit range
ILIM3
Buck 3 adjustable current limit range
Power-up
Set externally with resistor
fSW = 800 kHz
VIN = 12 V , TA = 25°C
VIN = 4.5 V to 16 V
VIN = 12 V, fSW = 500 kHz,
See Figure 36
VIN = 12 V, fSW = 500 kHz,
See Figure 37
VIN = 12 V, fSW = 500 kHz,
See Figure 38
1
10
5
0.3
50
-10
-1%
0.8
-2%
0.8
75
1.2
1.2
1.3
MAX UNIT
16 V
µA
µA
mA
V
µs
3.4 V
10 mA
6.88 V
10 mA
V
µs
1.82 V
V
1.24
0.33 x
V3p3
2.2
600
10
V
V
µA
ms
µA
MHz
k
%
1%
V
2%
135 ns
300 kΩ
5.05 A
4.7 A
4.7 A
Copyright © 2011–2013, Texas Instruments Incorporated
Product Folder Links: TPS652510
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