Datasheet
Table Of Contents
- FEATURES
- description
- APPLICATIONS
- ABSOLUTE MAXIMUM RATINGS
- Recommended Operating Conditions
- Electrical Characteristics
- Pin Assignments
- FUNCTIONAL BLOCK DIAGRAM
- Parameter Measurement Information
- TYPICAL CHARACTERISTICS
- APPLICATION INFORMATION
- Layout Considerations
- Application Information
- Detailed Description
- THERMAL INFORMATION
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FUNCTIONAL BLOCK DIAGRAM
Anti-
Ringing
Gate
Control
PGND
Regulator
PGND
Control Logic
Oscillator
Temperature
Control
VOUT
PGND
FB
SW
VBAT
EN
SYNC
GND
LBI
LBO
_
+
100 k
10 pF
_
+
V
REF
= 0.5 V
GND
Error Amplifier
_
+
_
+
GND
V
REF
= 0.5 V
Low Battery Comparator
TPS61090
TPS61091, TPS61092
SLVS484A – JUNE 2003 – REVISED APRIL 2004
Pin Assignments (continued)
Terminal Functions (continued)
TERMINAL
I/O DESCRIPTION
NAME NO.
GND 13 I/O Control/logic ground
LBI 9 I Low battery comparator input (comparator enabled with EN)
LBO 12 O Low battery comparator output (open drain)
NC 2 Not connected
SYNC 10 I Enable/disable power save mode (1: VBAT disabled, 0: GND enabled, clock signal for
synchronization)
SW 3, 4 I Boost and rectifying switch input
PGND 5, 6, 7 I/O Power ground
VBAT 8 I Supply voltage
VOUT 1, 15, 16 O DC/DC output
PowerPAD™ Must be soldered to achieve appropriate power dissipation. Should be connected to PGND.
4