Datasheet Texas Instruments LM2794TL/NOPB — 数据表

LM2794, LM2795
www.ti.com SNVS168L – JANUARY 2002 – REVISED MAY 2013 LM2794 /LM2795 Current Regulated Switched Capacitor LED Supply with Analog and
PWM Brightness Control
Check for Samples: LM2794, LM2795 FEATURES APPLICATIONS 1 2 Regulated Current Sources with В±0.5%
Matching between any Two Outputs
High Efficiency 3/2 Boost Function
Drives One, Two, Three or four White LEDs
2.7V to 5.5V Input Voltage
Up to 80mA Output Current
Analog Brightness Control
Active-Low or High Shutdown Input ('94/95)
Very Small Solution Size and no Inductor
2.3ВµA (typ.) Shutdown Current
325kHz Switching Frequency (min.)
Constant Frequency Generates Predictable
Noise Spectrum
Thin DSBGA Package: 2.08mm X 2.403mm X
0.600mm High White LED Display Backlights
White LED Keypad Backlights
1-Cell Li-Ion Battery-Operated Equipment
Including PDAs, Hand-Held PCs, Cellular
Phones DESCRIPTION
The LM2794/95 is a fractional CMOS charge-pump …