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PDF LD6902 Data sheet ( Hoja de datos )
| Número de pieza | LD6902 | |
| Descripción | High Voltage Linear Regulator | |
| Fabricantes | Leadtrend | |
| Logotipo |  |
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High Voltage Linear Regulator
LD6902
12/15/2005
REV: 03
General Description
The LD6902 is a high voltage, micropower linear regulator,
which features wide input voltage, low-noise, low-dropout
and low-quiescent current. The precision of feedback
reference voltage is within ±2% and output current is up to
90mA.
The LD6902 can also be used as a WLED driver. The
external soft start function provides a flexible way to limit the
startup current.
Features
z ±2% feedback reference
z Shutdown current <1µA (TYP)
z High input voltage: up to 21V
z Thermal shutdown and current limit protection
z Soft start operation
Applications
z Microcontroller Power
z Hand-Held Instruments
+Patent pending
Typical Application
VIN/15V
0.1µF/X5R
3.3nF
VIN OUT
LD6902
CE
R1/100K
SS
GND
FB
R2/20K
VOUT/7.5V
4.7µF/X5R
Fig.1 High voltage linear regulator application
Leadtrend Technology Corporation
LD6902-DS-03 December, 2005
1
1 page  
LD6902
Electrical Characteristics
(TA = +25oC unless otherwise stated, VIN=15V, CE=VIN, ILOAD=5µA)
PARAMETER
INPUT POWER
Input Voltage
Nominal Supply Current
Shutdown Supply Current
REFERENCE VOLTAGE
Feedback Reference
Reference Voltage Tolerance
Feedback Input Current
OUTPUT
Output Current Limit
Output Reverse Leakage Current
Capacitive Load Requirement
Dropout Voltage
Ripple Rejection
Soft Start
Soft Start Current
CE
CE Input Current
CE Input Level
THERMAL PROTECTION
Thermal Protection
Hysteresis
CONDITIONS
CE=VIN
CE=GND
FB=OUT
VIN=6V to 18V, ILOAD =1mA
VFB=1.3V
MIN
4
-
-
VIN=unconnected, OUT set to
5V
ILOAD =30mA
F=120Hz, ein=1Vrms,
Iout=10mA
F=10KHz, ein=1Vrms,
Iout=10mA
60
-
0.23
-
-
-
-
CE=0 or 15V
Enable
Disable
-1
1.4
-
VOUT short to GND
TYP
MAX UNITS
- 21 V
30 60 µA
1 5 µA
1.25
10
V
2%
nA
90 - mA
50 - µA
µF/mA
0.25
0.35
V
60 dB
45 dB
2 - µA
- 1 µA
- -V
-
0.25
V
125 °C
20 °C
Leadtrend Technology Corporation
LD6902-DS-03 December, 2005
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet LD6902.PDF ] | |
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