Datasheet
Table Of Contents
- 1 Features
- 2 Applications
- 3 Description
- 4 Simplified Schematic
- Table of Contents
- 5 Revision History
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Parameteric Measurement Information
- 9 Detailed Description
- 10 Application and Implementation
- 11 Power Supply Recommendations
- 12 Layout
- 13 Device and Documentation Support
- 14 Mechanical, Packaging, and Orderable Information
1516
Exposed
Thermal Pad*
VOS
PGND
1
2
SW
SW
3
4
FREQ
PG
1314
PGND
EN
6
5
7 8
12
11
10
9
FB
AGND
CP
CN
PVIN
AVIN
SS
PVIN
TPS62090
,
TPS62091
,
TPS62092
,
TPS62093
www.ti.com
SLVSAW2B –MARCH 2012–REVISED APRIL 2014
Device Comparison Table
DEVICE NUMBER OUTPUT VOLTAGE
TPS62090 Adjustable
TPS62091 3.3 V
TPS62092 2.5 V
TPS62093 1.8 V
6 Pin Configuration and Functions
16 PIN QFN
TOP VIEW
NOTE: *The exposed Thermal Pad is connected to AGND.
Pin Functions
PIN
I/O DESCRIPTION
NAME NO.
SW 1, 2 I Switch pin of the power stage.
This pin selects the switching frequency of the device. FREQ=low sets the typical switching frequency to 2.8 MHz.
FREQ 3 I FREQ=high sets the typical switching frequency to 1.4 MHz. This pin has an active pull down resistor of typically 400 kΩ and
can be left floating for 2.8 MHz operation.
Power good open drain output. This pin is high impedance if the output voltage is within regulation. This pin is pulled low if
PG 4 O the output is below its nominal value. The pull up resistor can not be connected to any voltage higher than the input voltage of
the device.
Feedback pin of the device. For the fixed output voltage versions this pin needs to be connected to GND for improved thermal
FB 5 performance. If, desired then this pin can also be left floating since it is internally connected with 400 kΩ to GND for fixed
output voltage versions.
AGND 6 Analog ground.
CP 7 Internal charge pump flying capacitor. Connect a 10 nF capacitor between CP and CN.
CN 8 Internal charge pump flying capacitor. Connect a 10 nF capacitor between CP and CN.
Soft-start control pin. A capacitor is connected to this pin and sets the softstart time. Leaving this pin floating sets the
SS 9 I
minimum start-up time.
AVIN 10 Bias supply input voltage pin.
PVIN 11,12 Power supply input voltage pin.
Device enable. To enable the device this pin needs to be pulled high. Pulling this pin low disables the device. This pin has an
EN 13
active pull down resistor of typically 400 kΩ.
PGND 14,15 Power ground connection.
VOS 16 Output voltage sense pin. This pin needs to be connected to the output voltage.
Thermal Pad The exposed thermal pad is connected to AGND.
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Product Folder Links: TPS62090 TPS62091 TPS62092 TPS62093