TS30021 Datasheet, PDF (1/19 Pages) List of Unclassifed Manufacturers – High Efficiency 1A/2A/3A Current-Mode Synchronous Buck DC/DC Converter, 2MHz and 470mA LDO

TS30021/22/23
Version 1.5
High Efficiency 1A/2A/3A Current-Mode Synchronous Buck
DC/DC Converter, 2MHz and 470mA LDO
DESCRIPTION
The TS30021 (1A), TS30022 (2A) and TS30023
(3A) are DC/DC synchronous switching regulator
with fully integrated power switches, internal
compensation, and full fault protection, with a low-
dropout regulator. The switching frequency of
2MHz enables the use of small filter components
resulting in minimal board space and reduced BOM
costs. In addition, a 470mA LDO with external
voltage adjustment is provided. The LDO is capable
of working at the VCC supply.
The TS30021/22/23 utilizes current mode feedback
in normal regulation PWM mode. When the
regulator is disabled (EN is low), the device draws
less than 10uA quiescent current.
The TS30021/22/23 integrates a wide range of
protection circuitry including input supply under-
voltage lockout, output voltage soft start, current
limit, and thermal shutdown.
The TS30021/22/23 includes supervisory reporting
through the PG (Power Good) open drain output to
interface other components in the system.
APPLICATIONS
 On-card switching regulators
 Set-top box, DVD, LCD, LED supply
 Industrial power supplies
FEATURES
 Fixed output voltage choices: 1.5V, 1.8V, 2.5V,
3.3V, and 5V with +/- 2% output tolerance
 Adjustable version output voltage range: 0.8V to
5V with +/- 1.5% reference
 Wide input voltage range
TS30021/22/23: 4.5V to 16V (18V Abs Max)
 2MHz +/- 10% fixed switching frequency
 Continuous output current: 1A (TS30021), 2A
(TS30022) and 3A (TS30023)
 High efficiency – up to 95%
 Current mode PWM control with PFM mode for
improved light load efficiency
 Voltage supervisor for V_OUT reported at the PG pin
 Input supply under voltage lockout
 Soft start for controlled startup with no overshoot
 Full protection for over-current, over-temperature,
and V_OUT over-voltage
 Less than 10uA in shutdown mode
 Low external component count
 LDO has adjustable output voltage 0.8V to 5V and
470mA output current capability
SUMMARY SPECIFICATION
 Junction operating temperature -40 °C to 125 °C
 Packaged in a 16pin QFN (3x3)
TYPICAL APPLICATIONS
Adjustable Switcher Output
Fixed Switcher Output
VCC
Cbypass
VCC
VLDO
Cbypass-LDO
VLDO
EN
EN
BST
VSW
FBSW
VOLDO
FBLDO
PG
CBST
Lout
RTOPSW
RBOTSW
VOUT
Cout
RTOP
RBOT
Cout_LDO
VOUT
10kW
(Optional)
VOUT_LDO
PG
VCC
Cbypass
VLDO
Cbypass-LDO
VCC
VLDO
EN
EN
BST
VSW
FBSW
VOLDO
FBLDO
PG
CBST
Lout
Cout
VOUT
RTOP
RBOT
Cout_LDO
VOUT
10kW
(Optional)
VOUT_LDO
PG
Specifications subject to change
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