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ESMT/EMP
EMP8965
Fast Ultra High-PSRR, Low-Noise, Low-Dropout,
600mA Micropower CMOS Linear Regulator
General Description
The EMP8965 low-dropout (LDO) CMOS linear regulators
feature ultra-high power supply rejection ratio (75dB at
1kHz), low output voltage noise (30µV), low dropout
voltage (270mV), low quiescent current (110µA), and fast
transient response. It guarantees delivery of 600mA output
current, and supports preset output voltages ranging from
1.2V to 3.3V with 0.1V increment (except for 1.85V and
2.85V).
The EMP8965 is ideal for battery-powered applications by
virtue of its low quiescent current consumption and its 1nA
shutdown mode of logical operation. The regulator
provides fast turn-on and start-up time by using dedicated
circuitry to pre-charge an optional external bypass
capacitor. This bypass capacitor is used to reduce the
output voltage noise without adversely affecting the load
transient response. The high power supply rejection ratio of
the EMP8965 holds well for low input voltages typically
encountered in battery- operated systems. The regulator is
stable with small ceramic capacitive loads (2.2µF typical).
Additional features include regulation fault detection,
bandgap voltage reference, constant current limiting and
thermal overload protection. Available in miniature 5-pin
SOT-89-5 package options, SOT-23-5 and SOT-23-6
package options are also offered to provide additional
flexibility for different applications.
EMP products is RoHS compliant.
Features
„ Miniature SOT-23-5, SOT-23-6and SOT-89-5 packages
„ 600mA guaranteed output current
„ 75dB typical PSRR at 1kHz
„ 30µV RMS output voltage noise (10Hz to 100kHz)
„ 270mV typical dropout at 600mA
„ 110µA typical quiescent current
„ 1nA typical shutdown mode
„ Fast line and load transient response
„ 80µs typical fast turn-on time
„ 2.5V to 5.5V input range
„ Stable with small ceramic output capacitors
„ Over temperature and over current protection
„ ±2% output voltage tolerance
Applications
„ Wireless handsets
„ PCMCIA cards
„ DSP core power
„ Hand-held instruments
„ Battery-powered systems
„ Portable information appliances
Elite Semiconductor Memory Technology Inc. /Elite MicroPower Inc.
Publication Date : May 2009
Revision : 2.1 1/20

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ESMT/EMP
Connection Diagrams
SOT-23-5(Top View)
SOT-23-6(Top View)
SOT-89-5(Top View)
EMP8965
Order information
EMP8965-XXVF05GRR/NRR
XX
VF05
GRR
NRR
Operation Code
SOT-23-5 Package
RoHS (Pb Free)
Rating: -40 to 85°C
Package in Tape & Reel
RoHS & Halogen free (By Request)
Rating: -40 to 85°C
Package in Tape & Reel
EMP8965-XXVC06GRR/NRR
XX Operation Code
VC06 SOT-23-6 Package
GRR RoHS (Pb Free)
Rating: -40 to 85°C
Package in Tape & Reel
NRR RoHS & Halogen free (By Request)
Rating: -40 to 85°C
Package in Tape & Reel
EMP8965-XXVG05GRR/NRR
XX Operation Code
VG05 SOT-89-5 Package
GRR RoHS (Pb Free)
Rating: -40 to 85°C
Package in Tape & Reel
NRR RoHS & Halogen free (By Request
Rating: -40 to 85°C
Package in Tape & Reel
Elite Semiconductor Memory Technology Inc. /Elite MicroPower Inc.
Publication Date : May 2009
Revision : 2.1 2/20

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ESMT/EMP
EMP8965
Order, Mark & Packing Information
Vout
No. of PIN Fixed EN CC Fault Package
Marking
Code
Vout
Product ID
(XX)
12 1.2 EMP8965-12VF05GRR
15 1.5 EMP8965-15VF05GRR
18 1.8 EMP8965-18VF05GRR
5 Y Y Y N SOT-23-5
25 2.5 EMP8965-25VF05GRR
30 3.0 EMP8965-30VF05GRR
33 3.3 EMP8965-33VF05GRR
33 3.3 EMP8965-33VF05GRR
12 1.2
By request
15 1.5
By request
5 Y Y Y N SOT-89-5
18 1.8 EMP8965-18VG05GRR
25 2.5 EMP8965-25VG05GRR
30 3.0
By request
33 3.3 EMP8965-33VG05GRR
12 1.2 EMP8965-12VC06GRR
15 1.5 EMP8965-15VC06GRR
6 Y Y Y Y SOT-23-6
18 1.8 EMP8965-18VC06GRR
25 2.5
By request
30 3.0
By request
33 3.3 EMP8965-33VC06GRR
Package & Packing
Old Marking: please see the notice(Page 18)
SOT-23-5
SOT-23-6
SOT-89-5
3K units Tape & Reel
3K units Tape & Reel
1K units Tape & Reel
Elite Semiconductor Memory Technology Inc. /Elite MicroPower Inc.
Publication Date : May 2009
Revision : 2.1 3/20

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ESMT/EMP
Typical Application
EMP8965
Fig. 1. EMP8965 with Fault. Fixed output version.
Fig. 2. EMP8965. Fixed output version.
Elite Semiconductor Memory Technology Inc. /Elite MicroPower Inc.
Publication Date : May 2009
Revision : 2.1 4/20

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ESMT/EMP
Pin Functions
EMP8965
Name
VOUT
VIN
GND
CC
SHDN
FAULT
SOT-23-5 SOT-89-5 SOT-23-6
Function
5 5 6 Output Voltage Feedback.
Supply Voltage Input. Require a minimum input capacitor of close to
141
1µF to ensure stability and sufficient decoupling from the ground pin.
2 2 2 Ground Pin.
Compensation Capacitor. Connect an optimum 33nF noise bypass
4 1 4 capacitor between the CC and the ground pins to reduce noise in
VOUT.
Shutdown Input. Set the regulator into the disable mode by pulling the
SHDN pin low. To keep the regulator on during normal operation,
333
connect the SHDN pin to VIN. The SHDN pin must not exceed VIN under
all operating conditions.
Fault Detection Output. The FAULT pin goes low when the voltage
regulating function fails. Because the FAULT pin connects to the
open-drain output of a NMOS transistor, a typical 100kΩ pull-up resistor
5
is required to provide the necessary output voltage. The FAULT pin
enters the high impedance state during shutdown and it should be
connected to ground if unused.
Elite Semiconductor Memory Technology Inc. /Elite MicroPower Inc.
Publication Date : May 2009
Revision : 2.1 5/20