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UNISONIC TECHNOLOGIES CO., LTD
L11815B
Preliminary
1.5A CMOS LDO
„ DESCRIPTION
The UTC L11815B is a positive, linear regulator. One of its
features is the very low quiescent current typically as low as 45μA
and the dropout voltage is extremely low.
The internal circuit includes thermal shutdown and current
fold-back mechanism to prevent device failure when the circuit is
operated in the bad conditions.
In application, the UTC L11815B needs a low noise and
regulated supply. For stability, the output capacitance value should
be 4.7μF or more.
The UTC L11815B is an ideal for battery applications, such as
instrumentations, portable electronics, wireless devices, cordless
phones, PC peripherals, and battery powered widgets. The output
voltage values are set during manufacturing and their accuracy is
trimmed to within 1.5%.
„ FEATURES
* Quiescent Current (45μA typ.)
* Accurate :±1.5%
* Very Low Dropout Voltage
* Guaranteed 1.5A Output
* Over-Temperature Shutdown
* With Current Limiting
* Short Circuit Current Fold-Back
* Power-Saving Shutdown Mode
* Low Temperature Coefficient
* Halogen Free
„ ORDERING INFORMATION
Ordering Number
Package
Packing
L11815BG-xx-x-S08-R
SOP-8
Tape Reel
Note: xx: Output Voltage, x: Pin Code; refer to Marking Information.
L11815BG-xx-x-S08-R
(1) Packing Type
(2) Package Type
(3) Pin Code
(4) Output Voltage Code
(5) Halogen Free
(1) R: Tape Reel
(2) S08: SOP-8
(3) x: Pin Code
(4) xx: Refer to Marking Information
(5) G: Halogen Free
www.DataSheet4U.com
CMOS IC
www.unisonic.com.tw
Copyright © 2010 Unisonic Technologies Co., Ltd
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L11815B
„ MARKING INFORMATION
PACKAGE
VOLTAGE CODE
Preliminary
MARKING
SOP-8
AD: ADJ
„ PIN CONFIGURATION
CMOS IC
„ PIN DESCRIPTION
PIN NO PIN NAME Pin Code
1 EN
2 VIN
3 VOUT
4 ADJ
5~8 GND
C
DESCRIPTION
Enable pin.
When pulled low, the PMOS pass transistor turns off, current consuming
less than 1μA.
Input voltage pin.
It should be decoupled with 1μF or greater capacitor.
LDO voltage regulator output pin.
It should be decoupled with a 4.7μF or greater value low ESR ceramic
capacitor.
Feedback output voltage for adjustable device.
Ground connection pin.
www.DataSheet4U.com
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R502-352.c

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L11815B
„ BLOCK DIAGRAM
VIN
EN
Preliminary
OCP
OTP
EA
VREF=1.2V
CMOS IC
VOUT
ADJ
GND
www.DataSheet4U.com
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R502-352.c