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TPS54200 Fiches technique(PDF) 5 Page - Texas Instruments

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No de pièce TPS54200
Description  4.5-V to 28-V Input Voltage, 1.5-A Output Current, Synchronous Buck WLED Driver
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS54200 Fiches technique(HTML) 5 Page - Texas Instruments

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5
TPS54200, TPS54201
www.ti.com
SLUSCO8A – NOVEMBER 2016 – REVISED MARCH 2017
Product Folder Links: TPS54200 TPS54201
Submit Documentation Feedback
Copyright © 2016–2017, Texas Instruments Incorporated
(1)
Not production tested
6.5 Electrical Characteristics
The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These
specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of
the product containing it. TJ = –40°C to +125°C, VIN = 4.5 V to 28 V, (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
INPUT SUPPLY
VIN
Input voltage range
4.5
28
V
IOFF
Shut down current
PWM = GND
2
8.6
µA
VIN_UVLO
VIN under voltage lockout
Rising VIN
3.83
4.2
4.47
V
Falling VIN
3.4
3.7
3.95
V
Hysteresis
470
mV
DIMMING (PWM PIN)
VADIM
Analog dimming mode threshold
Rising
1.97
2.07
2.17
V
Falling
1.8
V
VPDIM
PWM dimming mode threshold
Rising
0.9
1.0
1.1
V
Falling
0.8
V
VPWM
Threshold to identify PWM duty cycle
Rising
0.91
1.0
1.12
V
Falling
0.5
0.63
0.72
V
VPWM_SHUTDOWN
Shutdown threshold
0.35
0.55
V
FEEDBACK AND ERROR AMPLIFIER
VFB1
Feedback voltage in analog dimming
mode
PWM = 3.3 V, SW duty > 90%
201
205
210
mV
VFB2
Feedback voltage in PWM dimming mode
PWM = 1.5 V, SW duty > 90%
96
100
104
mV
BOOT PIN
VBOOT_UVLO
BOOT-SW UVLO threshold
Rising
2.1
2.33
V
Falling
2
2.2
V
POWER STAGE
RHSD
High-side FET on resistance
VBOOT – SW = 6 V
150
259
RLSD
Low-side FET on resistance
VIN > 6 V
70
120
CURRENT LIMIT
ILIM_HS1
High side current limit 1
Either one of below conditions:
1. PWM dim mode
2. Analog dim mode and PWM duty >25%
2.4
3
3.6
A
ILIM_HS2
High side current limit 2
Analog dim mode and PWM duty <25%
1
1.4
1.8
A
ILIM_LS_SOURCE
Low side source current limit
VIN > 6 V
2.3
3.3
4.4
A
ILIM_LS_SINK
Low side sink current limit
VIN > 6 V
1.25
1.7
2.2
A
FAULT PROTECTION
Thermal
shutdown(1)
Rising temperature
150
160
170
°C
Hysteresis
10
°C
VOVP
Over voltage protection
1
V
VOCP
Over current protection
120%


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