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ESMT/EMP
EMP8734
Fast Ultra High-PSRR, Low-Noise, 300mA
CMOS Linear Regulator
General Description
The EMP8734 features ultra-high power supply rejection
ratio, low output voltage noise, low dropout voltage,
low quiescent current and fast transient response. It
guarantees delivery of 300mA output current and
supports preset output voltages ranging from 0.8V to
4.5V with 0.05V increment.
Based on its low quiescent current consumption and its
less than 1μA shutdown mode of logical operation, the
EMP8734 is ideal for battery-powered applications. The
high power supply rejection ratio of the EMP8734 holds
well for low input voltages typically encountered in
battery-operated systems. The regulator is stable with
small ceramic capacitive loads (1µF typical). The
EMP8734 is Available in miniature SOT-23-5
SOT-353(SC-70-5 ), SOT-343 and TDFN-6 packages.
„ 300mA guaranteed output current
„ 62dB typical PSRR at 1kHz
„ 110µV RMS output voltage noise (10Hz to 100kHz)
„ 290mV typical dropout at 300mA
„ 57µA typical quiescent current
„ Less than 1μA typical shutdown mode
„ Fast line and load transient response
„ 2.2V to 5.5V input range
„ Auto-discharge during chip disable
„ 80µs typical turn-on time
„ 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
Features
Typical Application
*Use 2.2μF for VOUT < 1.2V
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Mar. 2011
Revision : 2.3
1/15

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ESMT/EMP
CONNECTION DIAGRAM
SOT-23-5(TOP View)
EMP8734
ORDER INFORMATION
EMP8734-XXVF05GRR
XX Output voltage
VF05 SOT-23-5 Package
GRR RoHS & Halogen free
Rating: -40 to 85°C
Package in Tape & Reel
TDFN-6(TOP View)
SOT-353 (SC-70-5) (TOP View)
SOT-343 (SC-82-4) (TOP View)
EMP8734-XXFE06NRR
XX Output voltage
FE06 TDFN-6 Package
NRR RoHS & Halogen free
Rating: -40 to 85°C
Package in Tape & Reel
EMP8734-XXVI05NRR
XX Output voltage
VI05 SOT-353 Package
NRR RoHS & Halogen free
Rating: -40 to 85°C
Package in Tape & Reel
EMP8734-XXVJ04NRR
XX Output voltage
VJ04 SOT-343 Package
NRR RoHS & Halogen free
Rating: -40 to 85°C
Package in Tape & Reel
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Mar. 2011
Revision : 2.3
2/15

No Preview Available !

ESMT/EMP
EMP8734
Pin Functions
Name SOT-23-5 TDFN-6
VIN 1
1
GND
2
5
EN 3
6
NC
VOUT
4
5
2/4
3
SOT-353 Function
Supply Voltage Input. Require a minimum input capacitor of close to 1µF to
1
ensure stability and sufficient decoupling from the ground pin.
2 Ground Pin.
Enable Input. Enable the regulator by pulling the EN pin High. To keep the
3 regulator on during normal operation, connect the EN pin to VIN. The EN
pin must not exceed VIN under all operating conditions.
4 No Connection
5 Output Voltage Feedback.
Order, Mark & Packing Information
Marking
Vout
1.2
1.5
1.8
2.5
2.8
3.0
3.3
Product ID
EMP8734-12VF05GRR
EMP8734-15VF05GRR
EMP8734-18VF05GRR
EMP8734-25VF05GRR
EMP8734-28VF05GRR
EMP8734-30VF05GRR
EMP8734-33VF05GRR
Packing
3K units Tape & Reel
3K units Tape & Reel
3K units Tape & Reel
3K units Tape & Reel
3K units Tape & Reel
3K units Tape & Reel
3K units Tape & Reel
2.5 EMP8734-25FE06NRR
5K units Tape & Reel
1.2 EMP8734-12VI05NRR
1.3 EMP8734-13VI05NRR
1.8 EMP8734-18VI05NRR
2.5 EMP8734-25VI05NRR
3.3 EMP8734-33VI05NRR
3K units Tape & Reel
3K units Tape & Reel
3K units Tape & Reel
3K units Tape & Reel
3K units Tape & Reel
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Mar. 2011
Revision : 2.3
3/15

No Preview Available !

ESMT/EMP
Marking
Vout
1.2
1.8
2.8
3.3
Product ID
EMP8734-12VJ04NRR
EMP8734-18VJ04NRR
EMP8734-28VJ04NRR
EMP8734-33VJ04NRR
EMP8734
Packing
3K units Tape & Reel
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Mar. 2011
Revision : 2.3
4/15

No Preview Available !

ESMT/EMP
Absolute Maximum Ratings (Notes 1, 2)
EMP8734
VIN, VOUT, VEN
Storage Temperature Range
Junction Temperature (TJ)
Lead Temperature (10 sec.)
ESD Rating
Human Body Model
MM
-0.3V to 6.5V
-65°C to160°C
150°C
240°C
2kV
200V
Thermal Resistance (θJA)
SOT-23-5
SOT-343/SOT-353
TDFN-6
Operating Ratings (Note 1, 2)
Temperature Range
Supply Voltage
250°C/W
(Note 6)
(Note 6)
-40°C to 85°C
2.2V to 5.5V
Electrical Characteristics
Unless otherwise specified, all limits guaranteed for VIN = VOUT +1V (Note 3), VEN=VIN, CIN = COUT = 2.2µF, TA = 25°C.
Boldface limits apply for the operating temperature extremes: -40°C and 85°C.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VIN Input Voltage
2.2 5.5 V
VOUT
Output Voltage
0.8 4.5 V
ΔVOTL
1mA IOUT 300mA
Output Voltage Tolerance VOUT (NOM) +1V VIN 5.5V
(Note 3)
-2
-3
+2 % of
+3 VOUT (NOM)
IOUT Maximum Output Current Average DC Current Rating 300
mA
ILIMIT Output Current Limit
300 450
mA
Supply Current
IQ
IOUT = 0mA
IOUT = 300mA
57
130 µA
Shutdown Supply Current VOUT = 0V, EN = GND
0.001
1
IOUT = 100mA
VDO Dropout Voltage (Note4)
IOUT = 300mA
90
mV
290
ΔVOUT
Line Regulation
IOUT = 1mA, (VOUT + 1V) VIN
5.5V (Note 3)
-0.1
0.01
0.1 %/V
Load Regulation
1mA IOUT 300mA
0.0008
%/mA
VOUT=2.5V, IOUT = 10mA, 10Hz
en Output Voltage Noise
f 100kHz
110
µVRMS
Thermal Shutdown
Temperature
TSD
Thermal Shutdown
Hysteresis
165
35
VEN EN Input Threshold
VIH, (VOUT + 1V) VIN 5.5V
(Note 3)
VIL, (VOUT + 1V) VIN 5.5V
(Note 3)
1.2
V
0.4
IEN EN Input Bias Current
EN = GND or VIN
0.1 100 nA
TON Turn-On Time
VOUT at 95% of Final Value
80 µs
TOFF Turn-Off Time
IOUT=0mA (Note 5)
2.4 ms
Note 1: Absolute Maximum ratings indicate limits beyond which damage may occur. Electrical specifications do not
apply when operating the device outside of its rated operating conditions.
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Mar. 2011
Revision : 2.3
5/15