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Leadtrend - Ultra Low Quiescent Current CMOS LDO Regulator

Numéro de référence LD6991A
Description Ultra Low Quiescent Current CMOS LDO Regulator
Fabricant Leadtrend 
Logo Leadtrend 





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LD6991A fiche technique
LD6991/A
4/11/2008
90mA, Ultra Low Quiescent Current CMOS LDO Regulator
with Voltage Detector Circuit
REV:01b
General Description
The LD6991/A is an ultra low quiescent micropower linear
regulator with voltage detector circuit. For regulator circuit,
the precision of feedback reference voltage is within ±2%
and output current is up to 90mA. As well, it can be stable
with 1uF output capacitor which reduces the board space
and cost. For voltage detector circuit, the reset threshold
voltage accuracy is within ±2% and the reset time period is
adjustable by an external capacitor.
LD6991/A is available in a space saving SC70-6 package.
+patent pending
Features
REGULATOR CIRCUIT
z Low Dropout: 350mV @50mA
z Ultra Low Quiescent Current: 5μA(typ)
z Thermal Shutdown and Current Limiting Protection
z Stable with 1μF Capacitor
z Output Voltage: 1.5V to 3.3V (step 0.1V)
VOLTAGE DETECTOR CIRCUIT
z Reset Threshold Voltage 1.2V to 3.3V (step 0.1V)
z Low Supply Current:3μA (typ)
z Capacitor-Adjustable Reset Timeout Period
z Reset Output Options
Active-Low Open Drain (LD6991)
Active-High Open Drain (LD6991A)
Applications
z Battery-Powered Equipment
z Hand-Held Instruments
Typical Application
VDD
V IN
CIN
1μF/X5R
68nF
VIN OUT
100K
VOUT
LD6991
VDD
COUT 1μF/X5R
CD
RESET#
GND
Fig.1 Typical Application Circuit
Leadtrend Technology Corporation
LD6991/A-DS-01b, April 2008
1

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