TLV62569 2-A High Efficiency Synchronous Buck Converter in SOT Package

1 Features

Up to 95% Efficiency
Low R_DS(ON) Switches 100 mΩ / 60 mΩ
2.5-V to 5.5-V Input Voltage Range
Adjustable Output Voltage from 0.6 V to V_IN
Power Save Mode for Light Load Efficiency
100% Duty Cycle for Lowest Dropout
35-µA Operating Quiescent Current
1.5-MHz Typical Switching Frequency
Power Good Output
Over Current Protection
Internal Soft Startup
Thermal Shutdown Protection
Available in SOT Package
Pin-to-Pin Compatible with TLV62568
Create a Custom Design Using the TLV62569 With the WEBENCH® Power Designer

2 Applications

General Purpose POL Supply
Set Top Box
Network Video Camera
Wireless Router
Hard Disk Driver

3 Description

The TLV62569 device is a synchronous step-down buck DC-DC converter optimized for high efficiency and compact solution size. The device integrates switches capable of delivering an output current up to 2 A.

At medium to heavy loads, the device operates in pulse width modulation (PWM) mode with 1.5-MHz switching frequency. At light load, the device automatically enters Power Save Mode (PSM) to maintain high efficiency over the entire load current range. In shutdown, the current consumption is reduced to less than 2 μA.

The TLV62569 provides an adjustable output voltage via an external resistor divider. An internal soft start circuit limits the inrush current during startup. Other features like over current protection, thermal shutdown protection and power good are built-in. The device is available in a SOT23 and SOT563 package.

Device Information^⁽¹⁾

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TLV62569DBV	SOT23 (5)	2.90 mm × 2.80 mm
TLV62569PDDC	SOT23 (6)	2.90 mm × 2.80 mm
TLV62569DRL	SOT563 (6)	1.60 mm x 1.60 mm
TLV62569PDRL	SOT563 (6)	1.60 mm x 1.60 mm

For all available packages, see the orderable addendum at the end of the datasheet.

Device Comparison

PART NUMBER	FUNCTION	MARKING SYMBOL
TLV62569DBV	-	16AF
TLV62569PDDC	Power Good	7G
TLV62569DRL	-	19D
TLV62569PDRL	Power Good	19E

Simplified Schematic

TLV62569 TLV62569P typ_app_TLV62569P.gif

Efficiency at 5-V Input Voltage

TLV62569 TLV62569P D008_SLVSDG1_TLV62569.gif

4 Revision History

Changes from B Revision (July 2017) to C Revision

Changed TLV62569DRL and TLV62569PDRL to production statusGo
Added marking symbols for TLV62569DRL and TLV62569PDRL in the Device Comparison tableGo
Added DRL package thermal information Go
Corrected editorial error of EN pin threshold voltageGo
Added current limit for TLV62569DRL and TLV62569PDRL Go
Added TLV62569PDRL layout exampleGo

Changes from A Revision (March 2017) to B Revision

Changed TLV62569PDDC to production status Go
Moved Device Comparison table to page 1Go
Added DDC package thermal informationGo
Added startup time of TLV62569PDDCGo

Changes from * Revision (December 2016) to A Revision

Added WEBENCH® Model Go

5 Pin Configuration and Functions

TLV62569 TLV62569P All_Pinout_TLV62568.gif

Pin Functions

PIN NUMBER				I/O/PWR	DESCRIPTION
NAME	SOT23-5	SOT23-6	SOT563-6	I/O/PWR	DESCRIPTION
EN	1	1	5	I	Device enable logic input. Logic high enables the device, logic low disables the device and turns it into shutdown. Do not leave floating.
GND	2	2	2	PWR	Ground pin.
SW	3	3	4	PWR	Switch pin connected to the internal FET switches and inductor terminal. Connect the inductor of the output filter to this pin.
VIN	4	4	3	PWR	Power supply voltage input.
PG	-	5	6	O	Power good open drain output pin for TLV62569P. The pull-up resistor should not be connected to any voltage higher than 5.5V. If it's not used, leave the pin floating.
FB	5	6	1	I	Feedback pin for the internal control loop. Connect this pin to an external feedback divider.
NC	-	-	6	O	No connection pin for TLV62569DRL. The pin can be connected to the output or the ground. Or leave it floating.