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TPS652510RHAR Fiches technique(PDF) 7 Page - Texas Instruments

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No de pièce TPS652510RHAR
Description  4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN THREE DC-DC CONVERTERS WITH INTEGRATED FET
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS652510RHAR Fiches technique(HTML) 7 Page - Texas Instruments

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TPS652510
www.ti.com
SLVSB30A
– SEPTEMBER 2011 – REVISED SEPTEMBER 2011
ELECTRICAL CHARACTERISTICS
TJ = –40°C to 125°C, VIN = 12 V, fSW = 500 kHz (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
INPUT SUPPLY UVLO AND INTERNAL SUPPLY VOLTAGE
VIN
Input voltage range
4.5
16
V
IDDSDN
Shutdown
EN pin = low for all converters
170
µA
Converters enabled, no load
Buck1 = 1.2 V
Quiescent
Buck2 = 1.8 V
600
µA
Buck3 = 3.3 V
IDDQ
TA = 25°C, F_PWM = Low
Converters enabled, no load
Quiescent, forced PWM
18
mA
F_PWM = High, L = 4.7
µH
Rising VIN
4.22
UVLO
VIN under voltage lockout
V
Falling VIN
4.1
UVLODEGLITCH
Both edges
110
µs
V3p3
Internal biasing supply
3.3
V
V7V
Internal biasing supply
6.25
V
Rising V7V
3.8
V7VUVLO
UVLO for internal V7V rail
V
Falling V7V
3.6
V7VUVLO_DEGLITCH
Falling edge
110
µs
BUCK CONVERTERS (ENABLE CIRCUIT, CURRENT LIMIT, SOFT-START AND SWITCHING FREQUENCY)
V3p3 = 3.2 V - 3.4 V,
0.66 x
VIH_ENx
Enable threshold high
V
VENx rising
V3p3
V3p3 = 3.2 V - 3.4 V,
0.33 x
VIL_ENx
Enable treshold low
V
VENx falling
V3p3
V3p3 = 3.2 V - 3.4 V,
0.66 x
VIH_F_PWM
Enable threshold high
V
VENx rising
V3p3
V3p3 = 3.2 V - 3.4 V,
0.33 x
VIL_F_PWM
Enable treshold low
V
VENx falling
V3p3
ICHEN
Pull up current enable pin
1
µA
tD
Discharge time enable pins
Power-up
10
ms
ISS
Soft-start pin current source
5
µA
FSW_BK
Converter switching frequency range
Set externally with resistor
0.3
2.2
MHz
RFSW
Frequency setting resistor
50
600
k
fSW_TOL
Internal oscillator accuracy
fSW = 800 kHz
-10
10
%
FEEDBACK, REGULATION, OUTPUT STAGE
VIN = 12 V , TA = 25°C
-1%
0.8
1%
VFB
Feedback voltage
V
VIN = 4.5 V to 16 V
-2%
0.8
2%
Minimum on time (current sense
tON_MIN
135
ns
blanking)
ILIMIT1
Peak inductor current limit range
0.75
4
A
ILIMIT2
Peak inductor current limit range
0.75
3
A
ILIMIT3
Peak inductor current limit range
0.75
3
A
MOSFET (BUCK 1)
On resistance of high side FET on
H.S. Switch
25
°C, BOOT = 6.5 V
95
m
Ω
CH1
On resistance of low side FET on
L.S. Switch
25
°C, VIN = 12 V
50
m
Ω
CH1
MOSFET (BUCK 2)
On resistance of high side FET on
H.S. Switch
25
°C, BOOT = 6.5 V
120
m
Ω
CH2
On resistance of low side FET on
L.S. Switch
25
°C, VIN = 12 V
80
m
Ω
CH2
Copyright
© 2011, Texas Instruments Incorporated
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