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PDF SP7120 Data sheet ( Hoja de datos )
| Número de pieza | SP7120 | |
| Descripción | (SP7120 / SP7122) 2 or 3 Channel Low Dropout High Side Linear LED Driver | |
| Fabricantes | Sipex | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SP7120 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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SP7120/22
2 or 3 Channel Low Dropout
High Side Linear LED Driver
FEATURES
• LED Driver for common cathode parallel
connected LEDs
• Ultra Low Dropout Voltage of 150mV
• No EMI, no switching noise
• Integrated current matching
• PWM and Analog brightness control
• Enable/Shutdown control
• Shutdown current < 1µA
• Lead Free, RoHS Compliant Package:
Small footprint SOT23-6
APPLICATIONS
• Mobile Phones
• PDA, DSC, MP3 players
• Handheld Computers
• Keypads and display backlight
GENERAL DESCRIPTION
The SP712X driver’s family provides a simple solution for a matched current source for any
color common cathode LED configuration. The common cathode connection allows the user to
increase the LED power dissipation by having the cathodes heat-sinked to the ground plane of
the circuit board. The SP7120 may drive two LEDs or one LED at twice the current with two
channels connected in parallel. The SP7122 can drive three LEDs or one LED at three times
the current. The factory preset current values are 15mA (version A), 20mA (version B), or 25mA
(version C) per channel. In shutdown mode (EN pin is LOW), the supply current drops to 40nA
typical. The SP712x drivers are available in a small footprint 6-pin SOT23-6 package.
APPLICATION SCHEMATIC
Jun29-07 RevD
C1 1nF
SP7120 Powering 2 LEDs
SP7120/22 Low Dropout LED Driver
page 1
© 2007 Sipex Corporation
1 page  
APPLICATION CIRCUITS
Powering 1 high power LED IOUT up to 75mA with C version
Powering 1 high power LED IOUT up to 50mA with C version
C1 1nF
SP7122 Powering 3 LED’s
Jun29-07 RevD
C1 1nF
SP7120 Powering 2 LEDs
SP7120/22 Low Dropout LED Driver
page 5
© 2007 Sipex Corporation
5 Page 
The quiescent current is part of the total output current
TYPICAL PERFORMANCE SP7122A
IOUT is for 3 Channels 15mA per channel
IOUT is for 3 Channels 15mA per channel
50% Duty Cycle 5Khz PWM
CH1: PWM Signal CH2: Anode of LED
CH4: LED current 10mA/div
Low duty cycle 5Khz
CH:1 PWM Signal CH2: Anode of LED
CH4: LED current 10mA/div
Minimum On time 15µS 20kHz PWM
CH1: PWM Signal CH2: Anode of LED
CH4: LED current 10mA/div
High Duty Cycle 20kHz
CH1: PWM Signal CH2: Anode of LED
CH4: LED current 10mA/div
Jun29-07 RevD
SP7120/22 Low Dropout LED Driver
page 11
© 2007 Sipex Corporation
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet SP7120.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SP7120 | (SP7120 / SP7122) 2 or 3 Channel Low Dropout High Side Linear LED Driver | Sipex |
| SP7122 | (SP7120 / SP7122) 2 or 3 Channel Low Dropout High Side Linear LED Driver | Sipex |
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