|
|
Teilenummer | EMP8734-15VF05GRR |
|
Beschreibung | 300mA CMOS Linear Regulator | |
Hersteller | Elite Semiconductor | |
Logo | ||
Gesamt 15 Seiten 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
ESMT/EMP
EMP8734
Note 2: All voltages are with respect to the potential at the ground pin.
Note 3: Condition does not apply to input voltages below 2.2V since this is the minimum input operating voltage.
Note 4: Dropout voltage is measured by reducing VIN until VOUT drops 100mV from its nominal value at VIN -VOUT = 1V.
Dropout voltage does not apply to the regulator versions with VOUT less than 2.2V.
Note 5: Turn-off time is time measured between the enable input just decreasing below VIL and the output voltage just
decreasing to 10% of its nominal value.
Note 6: Maximum Power dissipation for the device is calculated using the following equations:
PD
=
TJ(MAX)
θJA
-
TA
where TJ(MAX) is the maximum junction temperature, TA is the ambient temperature, and θ JA is the
junction-to-ambient thermal resistance. E.g. for the SOT-23-5 packageθJA = 250°C/W, TJ(MAX) = 150°C and using
TA = 25°C, the maximum power dissipation is found to be 500mW. The derating factor (-1/θJA) = -4mW/°C, thus
below 25°C the power dissipation figure can be increased by 4mW per degree, and similarity decreased by this
factor for temperatures above 25°C. The value of theθJA for the TDFN-6 package is specifically dependent on
the PCB trace area, trace material, and the number of layers and thermal vias.
Functional Block Diagram
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Mar. 2011
Revision : 2.3
6/15
6 Page ESMT/EMP
SOT-353 (SC-70-5)
EMP8734
D
SYMBPLS
A
A1
A2
A3
A4
b
c
D
E
E1
e
e1
L
L1
L2
θ°
θ2°
MIN.
0.80
0
0.80
0.47
0.33
0.15
0.08
1.85
1.80
1.10
0.26
0
4
NOM.
-
-
0.90
0.52
0.38
-
-
2.00
2.10
1.25
0.65 BSC
1.30 BSC
0.36
0.42 REF
0.15 BSC
4
-
MAX.
1.10
0.10
1.00
0.57
0.43
0.30
0.22
2.15
2.40
1.40
0.46
8
12
UNIT: MM
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Mar. 2011
Revision : 2.3
12/15
12 Page | ||
Seiten | Gesamt 15 Seiten | |
PDF Download | [ EMP8734-15VF05GRR Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
EMP8734-15VF05GRR | 300mA CMOS Linear Regulator | Elite Semiconductor |
Teilenummer | Beschreibung | Hersteller |
CD40175BC | Hex D-Type Flip-Flop / Quad D-Type Flip-Flop. |
Fairchild Semiconductor |
KTD1146 | EPITAXIAL PLANAR NPN TRANSISTOR. |
KEC |
www.Datenblatt-PDF.com | 2020 | Kontakt | Suche |