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PDF LD8105 Data sheet ( Hoja de datos )
| Número de pieza | LD8105 | |
| Descripción | Constant Voltage and Constant Current Controller | |
| Fabricantes | Leadtrend | |
| Logotipo |  |
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LD8105
5/29/2012
Constant Voltage and Constant Current Controller
Rev. 00
General Description
The LD8105 is built-in with a high-accuracy 1.2V voltage
reference, two op-amps and a low-side current sensing
circuit in a SOT-26 package. It provides a highly
integrated solution for CV (constant voltage) and CC
(constant current) dual control. The LD8105 is capable to
operate under temperature ranging from -40°C to 105°C.
Features
Internal Precision ±1% Voltage Reference
Secondary-side Constant Voltage and Constant
Current Control
Low Quiescent consumption
Wide VCC operating range 3V to 38V
Max. 40V voltage rating
Low external component count
SOT-26 Package
Applications
LED Lighting
Typical Application
IREF 1.21V
VCC
OUT
100mV
ISEN
LD8105
GND
VSEN
Fig. 1 Typical Application Circuit -1
Leadtrend Technology Corporation
LD8105-DS-00 May 2012
1
www.leadtrend.com.tw
DC output
1 page  
Electrical Characteristics
(TA = +25C unless otherwise stated, VCC=15.0V)
PARAMETER
CONDITIONS
Supply Voltage (Vcc Pin)
Supply Voltage
Quiescent Current
ISEN = IREF = 0V, OUT = open
Voltage Control Loop (VSEN PIN)
Voltage loop reference voltage, VSEN
Voltage Loop Input Bias Current
Current Control Loop (IREF Pin)
ISEN = IREF = 0V
ISEN = IREF= 0V, (TA = -20C ~125C)
VSEN = 1.18V~1.24V
Current loop reference voltage, IREF
Current Loop Input Bias Current
Output (Output Pin)
VSEN = 1.21V
IREF= 90mV~110mV
Output Low Level
@2mA sink current
LD8105
MIN TYP MAX UNITS
3 -- 38 V
-- -- 150 μA
1.198
1.186
--
1.210
--
--
1.222
1.234
20
V
V
nA
97 100 103 mV
-- -- 20 nA
-- 200 400 mV
Leadtrend Technology Corporation
LD8105-DS-00 May 2012
5
www.leadtrend.com.tw
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet LD8105.PDF ] | |
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