Texas Instruments Evaluation Board for the LP5907UV-3.3 LP5907UV-3.3EVM/NOPB LP5907UV-3.3EVM/NOPB Scheda Tecnica
Codici prodotto
LP5907UV-3.3EVM/NOPB
User's Guide
SNVA634A – March 2012 – Revised April 2013
AN-2244 LP5907 DSBGA Evaluation Board Information
1
Introduction
This evaluation board is designed to enable the evaluation of the LP5907 Voltage Regulator. Each board
is assembled and tested in the factory. This evaluation board has the 4-bump DSBGA package mounted.
is assembled and tested in the factory. This evaluation board has the 4-bump DSBGA package mounted.
2
General Description
The LP5907 is a linear regulator capable of supplying 250 mA output current. Designed to meet the
requirements of RF/Analog circuits, the LP5907 provides low device noise, high PSRR, low quiescent
current, and low line transient response. Using new innovative design techniques, the LP5907 offers
class-leading noise performance without a noise bypass capacitor.
requirements of RF/Analog circuits, the LP5907 provides low device noise, high PSRR, low quiescent
current, and low line transient response. Using new innovative design techniques, the LP5907 offers
class-leading noise performance without a noise bypass capacitor.
The device has been designed to work with 1.0 µF input and output ceramic capacitors down to 0603
component size.
component size.
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Operation
The input voltage, applied between V
IN
and GND, should be at least 1.0V greater than V
OUT
and no more
than 5.5V. The minimum operating voltage is 2.2V. Loads can be connected to V
OUT
with reference to
GND. V
OUT
and V
IN
sense pins are provided on the board to allow accurate measurements directly onto the
input and output pins of the device, eliminating any voltage drop on the PCB traces or connecting wires to
the load.
the load.
ON/OFF control is provided by a two-way jumper on the V
EN
pin. A minimum of 1.2V is required at this pin
to enable the LDO. The LDO will be shut down when the V
EN
pin is set to 0.4V or less.
In applications where the LP5907 is operated continuously from the battery, V
IN
and V
EN
can be tied
together. However, if ON/OFF control is required, the V
EN
pin should be driven from a separate signal to
ensure correct operation of the fast startup circuit. The device has a 1M
Ω
internal resistor from V
EN
to
GND.
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1
SNVA634A – March 2012 – Revised April 2013
AN-2244 LP5907 DSBGA Evaluation Board Information
Copyright © 2012–2013, Texas Instruments Incorporated