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TPS65263RHBT Datasheet(PDF) 6 Page - Texas Instruments

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Part # TPS65263RHBT
Description  4.5- to 18-V Input Voltage, 3-A/2-A/2-A Output Current Triple Synchronous Step-Down Converter With I2C Controlled Dynamic Voltage Scaling
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS65263RHBT Datasheet(HTML) 6 Page - Texas Instruments

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TPS65263
SLVSCN0A – JUNE 2014 – REVISED SEPTEMBER 2014
www.ti.com
8.5 Electrical Characteristics
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
INPUT SUPPLY VOLTAGE
VIN
Input voltage range
4.5
18
V
VIN rising
4
4.25
4.5
V
UVLO
VIN undervoltage lockout
VIN falling
3.5
3.75
4
V
Hysteresis
500
mV
IDDSDN
Shutdown supply current
EN1 = EN2 = EN3 = 0 V
8
µA
EN1 = EN2 = EN3 = 5 V,
IDDQ_NSW
740
µA
FB1 = FB2 = FB3 = 0.8 V
EN1 = 5 V, EN2 = EN3 = 0 V,
IDDQ_NSW1
360
µA
FB1 = 0.8 V
Input quiescent current without buck1/2/3
switching
EN2 = 5 V, EN1 = EN3 = 0 V,
IDDQ_NSW2
380
µA
FB2 = 0.8 V
EN3 = 5 V, EN1 = EN2 = 0 V,
IDDQ_NSW3
380
µA
FB3 = 0.8 V
V7V
V7V LDO output voltage
V7V load current = 0 A
6
6.3
6.6
V
IOCP_V7V
V7V LDO current limit
185
mA
FEEDBACK VOLTAGE REFERENCE
VCOMP = 1.2 V, TJ = 25°C
0.595
0.6
0.605
V
VFB
Feedback voltage
VCOMP = 1.2 V, TJ = –40°C to 125°C
0.594
0.6
0.606
V
IOUT1 = 1.5 A, IOUT2 = 1 A, IOUT3 = 1 A,
VLINEREG_BUCK
Line regulation-DC(1)
0.002
%/V
5 V < PVINx < 18 V
VLOADREG_BUCK
Load regulation-DC(1)
IOUTx = (10-100%) × IOUTx_max
0.02
%/A
BUCK1, BUCK2, BUCK3
VENXH
EN1/2/3 high level input voltage
1.2
1.26
V
VENXL
EN1/2/3 low level input voltage
1.1
1.15
V
IENX1
EN1/2/3 pullup current
ENx = 1 V
3.8
µA
IENX2
EN1/2/3 pullup current
ENx = 1.5 V
6.8
µA
IENhys
Hysteresis current
3
µA
ISSX
Soft start charging current
4.3
5
6
µA
TON_MIN
Minimum on time
80
100
ns
Gm_EA
Error amplifier trans-conductance
–2 µA < ICOMPX < 2 µA
300
µS
Gm_PS1/2/3
COMP1/2/3 voltage to inductor current Gm(1)
ILX = 0.5 A
7.4
A/V
ILIMIT1
Buck1 peak inductor current limit
4.5
5.5
6.5
A
ILIMITSOURCE1
Buck1 low side source current limit
4.4
A
ILIMITSINK1
Buck1 low side sink current limit
1.3
ILIMIT2/3
buck2/3 peak inductor current limit
2.6
3.3
4
A
ILIMITSOURCE2/3
Buck2/3 low side source current limit
2.5
ILIMITSINK2/3
Buck2/3 low side sink current limit
1
A
Rdson_HS1
Buck1 high-side switch resistance
VIN = 12 V
105
m
Rdson_LS1
Buck1 low-side switch resistance
VIN = 12 V
65
m
Rdson_HS2
Buck2 high-side switch resistance
VIN = 12 V
140
m
Rdson_LS2
Buck2 low-side switch resistance
VIN = 12 V
90
m
Rdson_HS3
Buck3 high-side switch resistance
VIN = 12 V
140
m
Rdson_LS3
Buck3 low-side switch resistance
VIN = 12 V
90
m
HICCUP TIMING
THiccup_wait
Over current wait time(1)
0.5
ms
THiccup_re
Hiccup time before restart(1)
14
ms
OSCILLATOR
FSW
Switching frequency
550
600
650
kHz
(1)
Lab validation result.
6
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Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: TPS65263


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