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PDF LD6904 Data sheet ( Hoja de datos )
| Número de pieza | LD6904 | |
| Descripción | 120mA Negative Voltage Linear Regulator | |
| Fabricantes | Leadtrend | |
| Logotipo |  |
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LD6904
3/5/2008
120mA Negative Voltage Linear Regulator
REV: 01
General Description
The LD6904 is a negative voltage, micropower linear
regulator. It features wide input voltage, low-noise,
low-dropout and low-quiescent current. The precision of
feedback reference voltage is within ±1% and output current
reaches up to 120mA. The built-in output current limiting and
thermal shutdown protection could prevent from fault
conditions.
The LD6904 is available in a space saving SOT23-6 or
SC70-6 package.
Features
z ±1.5% feedback reference
z Shutdown current <1μA
z Negative voltage down to -11V
z Thermal shutdown and current limit
z VOUT discharge function
z Soft start operation
Applications
z Microcontroller Power
z Hand-Held Instruments
Typical Application
VIN/-8V
1μF/X5R
VIN OUT
CE LD6904
4.7nF
SS FB
GND
VOUT-7.5V
R1/50K
1μF/X5R
*R2/10K
*R2<15KΩ is recommended
Fig.1 Negative voltage linear regulator application
Leadtrend Technology Corporation
LD6904-DS-01 March 2008
1
www.leadtrend.com.tw
1 page  
LD6904
Absolute Maximum Ratings
VIN and FB Pin
OUT Pin
CE, Pin
SS, Pin
Power dissipation @Ta=25°C
Operating Temperature Range
Operating Junction Temperature
Storage Temperature Range
Package Thermal Resistance SOT23-6
Package Thermal Resistance SC70-6
Lead temperature (SC70-6, Soldering, 10sec)
ESD Level (Human Body Model)
ESD Level (Machine Model)
-12V~+0.3V
VIN-0.3V~ +0.3V
-0.3V~ 5V
-5V~0.3V
300mW
-30°C to 85°C
125°C
-55°C to 125°C
250°C/W
333°C/W
260°C
2KV
200V
Caution:
Stresses beyond the ratings specified in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only
rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not
implied.
Leadtrend Technology Corporation
LD6904-DS-01 March 2008
5
www.leadtrend.com.tw
5 Page 
LD6904
IR Profile for SMD Devices
Temp.
(ºc)
300
260
250
217
200
Ramp up
3ºC/second
max.
Peak Temp.
260 -5/+0ºC, 30 seconds
(max.)
Ramp down
6ºC/second max.
217ºC
60 ~ 150 seconds
150
Preheat
60 ~ 120 seconds
100
50
0
Time (sec.)
Item
Required
Average
Ramp-up Rate
3°C(max)
/sec
Pre-heat
(150 ~ 200°C)
60~120 sec
Time Maintained
Above 217°C
60~150 seconds
Peak Temp.
260 +0/-5°C
30 seconds
Ramp-down
Rate
6°C (max)
/sec
Leadtrend Technology Corporation
LD6904-DS-01 March 2008
11
www.leadtrend.com.tw
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LD6904.PDF ] | |
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