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LM2794BLNSN/a2370avaiCurrent Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
LM2794BLNSCN/a252avaiCurrent Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
LM2794BLXNSN/a1627avaiCurrent Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
LM2794BLXLMN/a6000avaiCurrent Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
LM2794BLXNSCN/a245avaiCurrent Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
LM2794TLNSN/a1200avaiCurrent Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
LM2794TLXNS N/a12000avaiCurrent Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
LM2795BLNSCN/a15000avaiCurrent Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
LM2795BLXNSN/a6000avaiCurrent Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
LM2795TLNSCN/a52avaiCurrent Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
LM2795TLXNSN/a3000avaiCurrent Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
LM2795TLXNATIONALN/a1000avaiCurrent Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
LM2795TLXNS/PBFN/a5830avaiCurrent Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control


LM2795BL ,Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness ControlPin DescriptionPin(*) Name FunctionA1 C1+ Positive terminal of C1B2 C1− Negative terminal of C1C1 V ..
LM2795BLX ,Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness ControlPin DescriptionPin(*) Name FunctionA1 C1+ Positive terminal of C1B2 C1− Negative terminal of C1C1 V ..
LM2795TL ,Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness ControlFeaturesn Regulated current sources with ±0.5% matchingThe LM2794/95 is a fractional CMOS charge-pu ..
LM2795TLX ,Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness ControlFeaturesn Regulated current sources with ±0.5% matchingThe LM2794/95 is a fractional CMOS charge-pu ..
LM2795TLX ,Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness ControlLM2794/LM2795 Current Regulated Switched Capacitor LED Supply with Analog and PWMBrightness Control ..
LM2795TLX ,Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness ControlLM2794/LM2795 Current Regulated Switched Capacitor LED Supply with Analog and PWMBrightness Control ..
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LM62BIM3 ,2.7V, 15.6mV/deg C, SOT-23 Temperature SensorapplicationsThe LM62 is a precision integrated-circuit temperature sen-sor that can sense a 0˚C to ..
LM62BIM3X ,2.7V, 15.6mV/deg C, SOT-23 Temperature SensorLM62 2.7V, 15.6 mV/˚C, SOT-23 Temperature SensorJune 1999LM622.7V, 15.6 mV/˚C SOT-23 Temperature Se ..
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LM2794BL-LM2794BLX-LM2794TL-LM2794TLX-LM2795BL-LM2795BLX-LM2795TL-LM2795TLX
Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
LM2794/LM2795
Current Regulated Switched Capacitor LED Supply with
Analog and PWM Brightness Control
General Description

The LM2794/95isa fractional CMOS charge-pump that
provides four regulated current sources.It acceptsan input
voltage range from 2.7Vto 5.5V and maintainsa constant
current determinedbyan external sense resistor.
The LM2794/5 deliversupto 80mAof load currentto accom-
modate four White LEDs. The switching frequencyis
325kHz. (min.)to keepthe conducted noise spectrum away
from sensitive frequencies within portableRF devices.
Brightness canbe controlledby both linear and PWM tech-
niques.A voltage between0V and 3.0V maybe appliedto
the BRGTpinto linearly varythe LED current. Alternatively, PWM signal canbe appliedto the SD pinto vary the
perceived brightnessof the LED. The SD pin reduces the
operating currentto 2.3µA (typ.) The LM2794is shut down
whentheSDpinis low, andthe LM2795is shut down when
theSDpinis high.
The LM2794/95is availableina micro SMD-14 CSP pack-
age.
Features
Regulated current sources with ±0.5% matching
between any two outputs High efficiency3/2 boost function Drives one, two, threeor four white LEDs 2.7Vto 5.5V Input Voltage Upto 80mA output current Analog brightness control Active-lowor high shutdown input (’94/95) Very small solution size andno inductor 2.3µA (typ.) shutdown current 325kHz switching frequency (min.) Constant Frequency generates predictable noise
spectrum Standard Micro SMD-14 package: 2.08mmX 2.403mm 0.845mm High Thin Micro SMD-14 package: 2.08mmX 2.403mmX
0.600mm High
Applications
White LED Display Backlights White LED Keypad Backlights 1-Cell Li-Ion battery-operated equipment including
PDAs, hand-held PCs, cellular phones
Basic Application Circuit

March 2004
LM2794/LM2795
Current
Regulated
Switched
Capacitor
LED
Supply
with
Analog
and
PWM
Brightness
Control
ic,good price


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