Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- DESCRIPTION
- ABSOLUTE MAXIMUM RATINGS
- DISSIPATION RATINGS
- RECOMMENDED OPERATING CONDITIONS
- ELECTRICAL CHARACTERISTICS
- PIN ASSIGNMENT
- TYPICAL CHARACTERISTICS
- DETAILED DESCRIPTION
- Power Save Mode operation (MODE)
- Power Save Mode Transition Thresholds
- Output Voltage Tracking (OVT)
- Soft Start
- 100% Duty Cycle Low Dropout Operation
- Power Good
- Undervoltage Lockout
- Short-Circuit Protection
- Thermal Shutdown
- Input Capacitor Selection
- Output Filter Design (Inductor and Output Capacitor)
- Setting the Output Voltage Using the Feedback Resistor Divider
- Inductor Selection
- Layout Guidelines
- APPLICATION INFORMATION
PIN ASSIGNMENT
SW
PGND
AGND
FB
OVT
PVIN
AVIN
PG
MODE
EN
Exposed
ThermalDie
(Note
A)
8
10
9
6
7
3
1
2
5
4
TPS62510
SLVS651A – MAY 2006 – REVISED JULY 2009 ................................................................................................................................................................
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
VIN = 3.3 V, OVT = EN = VIN, MODE = GND, T
A
= – 40 ° C to 85 ° C, typical values are at T
A
= 25 ° C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENT
t
SS
Soft start time V
O
ramping from 5% to 95% of nominal value 750 µ s
Leakage resistance from SW pin to GND V
I
> V
O
, 0 V ≤ V
(SW)
≤ V
I
700 1000
k Ω
Leakage resistance from FB pin to GND EN = low 17 23
DRC Package
(Top View)
A. The exposed Thermal Die is connected to AGND.
TERMINAL FUNCTIONS
TERMINAL
I/O DESCRIPTION
NAME NO.
SW 1 Switch pin of the converter. The inductor is connected here.
PGND 2 Power ground for the converter
AGND 3 Analog ground connection
Feedback voltage sense input. Connect directly to V
O
or to the midpoint of an external voltage divider for
FB 4 I
the adjustable version.
Output Voltage Tracking input. The signal applied to this pin is used as reference voltage overiding the
OVT 5 I internal reference voltage when it is below the internal 0.6-V reference. If this feature is not used, the
OVT pin is connected to V
I
.
Enable pin. A logic high enables the regulator, a logic low disables the regulator. This pin needs to be
EN 6 I
terminated and not left floating.
This pin is used to force fixed frequency PWM operation or to synchronize the device to an external clock
MODE 7 I signal. With MODE = high, the device is forced into 1.5-MHz fixed frequency PWM operation. With MODE
= low, the device automatically enters the Power Save Mode at light load currents.
Power Good indication. This is a open drain output that is low when the device is disabled or the output
PG 8 O
voltage drops 10% below target.
Power supply for control circuitry. Must be connected to the same voltage supply as PVIN through RC
AVIN 9
filter.
PVIN 10 Input voltage for the power stage. VIN must be connected to the same voltage supply as AVIN.
PowerPAD™ C2 Connect the PowerPAD to analog ground AGND.
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