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PDF LD6922 Data sheet ( Hoja de datos )

Número de pieza LD6922
Descripción High PSRR CMOS LDO Regulator
Fabricantes Leadtrend 
Logotipo Leadtrend Logotipo



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No Preview Available ! LD6922 Hoja de datos, Descripción, Manual

LD6922
9/1/2011
500mA, Ultra-Low Noise, High PSRR CMOS LDO Regulator
with Soft Start Function
REV: 01
General Description
The LD6922 is a micro power linear regulator with
minimum output voltage drop during load transient,
featuring ultra-low noise, low-dropout and high ripple
rejection ratio for optimal performance of battery-powered
systems. This SS pin can suppress the noise and is built in
with soft start function. As well, the LD6922 is stable with
an output capacitor of 1μF which reduces the board space
and cost.
The LD6922 is available in a space saving SC82-4,
SOT23-5, SC70-5, SC70-6, and WDFN-6L 1.6mm x
1.6mm package.
+Patented
Features
z Wide Operating Input Voltage Range2.5V to 5.5V
z Minimum Output Voltage Drop during Load Transient
z Ultra-Low Noise for RF Application
z Shutdown Current <1μA
z High PSRR 70dB@1kHz
z Stable with 1μF Output Capacitor
z Thermal Shutdown and Current Limiting Protection
z VOUT Discharge Function
z Soft Start Operation
z Fixed Output Voltage: 1.2V to 3.3V (step0.1V), and
3.45V.
Applications
z Battery-Powered Equipment
z Hand-Held Instruments
z Palmtops, Notebook Computers
Typical Application
Fig. 1 Typical Application Circuit for General Purpose
Leadtrend Technology Corporation
LD6922-DS-01 September 2011
1
www.leadtrend.com.tw

1 page




LD6922 pdf
LD6922
Electrical Characteristics
(VIN=VOUT+1V, TA = 25 °C, unless otherwise stated. CIN=COUT=1μF, CSS=22nF; the LD6922 is tested with 3.1V output,
unless other stated.) (Note 1)
PARAMETER
INPUT POWER
Input Voltage
Quiescent Current
Shutdown Supply Current
Dropt Voltage
CONDITIONS
CE>1.5V, IOUT=0mA
CE=GND
MIN TYP MAX UNITS
2.5 - 5.5 V
- 80 105 μA
- 0.1 1 μA
Dropt Voltage (Note2)
IOUT=300mA, 3.6VVIN5.5V
230 300 mV
IOUT=500mA, 3.6VVIN5.5V
380 500 mV
Soft Start
Internal Soft Start Time
60 100 140 μS
Output
Output Current Limit
Line Regulation
Load Regulation
Ripple Rejection
Output Noise Voltage
RLOAD=1Ω
VIN=VOUT +1V, to 5.5V,
IOUT=1mA
1mA<IOUT<300mA
VIN=VOUT+1V, 2.5VVOUT3.3V
1mA<IOUT<500mA
VIN=VOUT+1V, 2.5VVOUT3.3V
F=120Hz, EIN=1Vrms,
IOUT=10mA
F=1kHz, EIN=1Vrms,
IOUT=10mA
F=10kHz, EIN=1Vrms,
IOUT=10mA
VOUT=1.8V, IOUT=0mA
CSS=22nF
550
-
-
-
-
600
0.05
70
70
65
35
mA
0.2 %/V
0.8 %
1.6 %
dB
- dB
- dB
- μVrms
Leadtrend Technology Corporation
LD6922-DS-01 September 2011
5
www.leadtrend.com.tw

5 Page





LD6922 arduino
SOT-25
LD6922
Symbol
A
B
C
D
E
F
H
I
J
M
θ
Dimension in Millimeters
Min
2.692
Max
3.099
1.397
1.803
--- 1.450
0.300
0.500
1.90 TYP
0.95 TYP
0.080
0.254
0.050
0.150
2.600
3.000
0.300
0.600
0° 10°
Dimensions in Inches
Min
0.106
Max
0.122
0.055
0.071
--- 0.057
0.012
0.020
0.074 TYP
0.037 TYP
0.003
0.010
0.002
0.006
0.102
0.118
0.012
0.024
0° 10°
Leadtrend Technology Corporation
LD6922-DS-01 September 2011
11
www.leadtrend.com.tw

11 Page







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