TPS628501-Q1, TPS628502-Q1, TPS628503-Q1
SLUSDM0C – MAY 2020 – REVISED OCTOBER 2021
TPS62850x-Q1 2.7-V to 6-V, 1-A / 2-A / 3-A Automotive Step-Down Converter in
SOT583 Package
1 Features
3 Description
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AEC-Q100 qualified for automotive applications
– Device temperature grade 1:
–40°C to +125°C TA
Functional Safety-Capable
– Documentation available to aid functional safety
system design
TJ = –40°C to +150°C
Family of 1-A and 2-A (continuous) and 3-A (peak)
converters
Input voltage range: 2.7 V to 6 V
Quiescent current: 17 µA typical
Output voltage from 0.6 V to 5.5 V
Output voltage accuracy ±1% (PWM operation)
Forced PWM or PWM/PFM operation
Adjustable switching frequency of
1.8 MHz to 4 MHz
Precise ENABLE input allows:
– User-defined undervoltage lockout
– Exact sequencing
100% duty cycle mode
Active output discharge
Spread spectrum clocking – optional
Foldback overcurrent protection – optional
Power-good output with window comparator
The TPS62850x-Q1 is a family of pin-to-pin 1-A, 2-A
(continuous), and 3-A (peak) high efficiency, easy-to-
use synchronous step-down DC/DC converters. They
are based on a peak current mode control topology.
They are designed for automotive applications such
as infotainment and advanced driver assistance
systems. Low resistive switches allow up to 2-A
continuous output current and 3-A peak current. In the
TPS62850x-Q1, the switching frequency is externally
adjustable from 1.8 MHz to 4 MHz. The parts can
also be synchronized to an external clock in the same
frequency range. In PWM/PFM mode, the devices
automatically enter power save mode at light loads to
maintain high efficiency across the whole load range.
The family provides a 1% output voltage accuracy in
PWM mode which helps design a power supply with
high output voltage accuracy.
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The TPS62850x-Q1 are available in a SOT583
package.
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Device Information
PART NUMBER
TPS628501-Q1
TPS628502-Q1
TPS628503-Q1
PACKAGE(1)
BODY SIZE (NOM)
2.1 mm × 1.6 mm
(incl pins)
SOT583
2 Applications
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
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ADAS camera, ADAS sensor fusion
Surround view ECU
Hybrid and reconfigurable cluster
Head unit, telematics control unit
External amplifier
100
95
L
TPS62850x-Q1
0.47mH
V
IN
VOUT
2.7 V - 6 V
VIN
SW
CIN
R1
CFF
2*10 mF
0603
90
COUT
EN
FB
2*10 mF
0603
MODE/SYNC
R2
R3
85
80
75
COMP/FSET
VIN = 4.0 V
VIN = 5.0 V
VIN = 6.0 V
PG
GND
0
0.5
1
1.5
Output Current (A)
2
2.5
3
Simplified Schematic
Efficiency Versus IOUT, VOUT = 3.3 V
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.