LM2622MMX-ADJ/NOPB ,600kHz/1.3MHz Step-up PWM DC/DC Converter 8-VSSOP -40 to 125FEATURES DESCRIPTIONThe LM2622 is a step-up DC/DC converter with a2• 1.6A, 0.2Ω, Internal Switch1.6 ..
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LM2622MMX-ADJ/NOPB
600kHz/1.3MHz Step-up PWM DC/DC Converter 8-VSSOP -40 to 125
LM2622
RFB!
40.2k
10uH
24k
CIN
22UF
COUT
22uF
RFB2
7.5k
SHDN
VIN SW
FSLCT
GND
VC
2.7V - 3.3V
Battery or
Power
Source
LM2622
www.ti.com SNVS068E –MAY 2000–REVISED MARCH 2013
LM2622 600kHz/1.3MHz Step-up PWM DC/DC Converter
Checkfor Samples: LM2622
1FEATURES DESCRIPTIONThe LM2622isa step-up DC/DC converter witha
1.6A, 0.2Ω, Internal Switch 1.6A, 0.2Ω internal switch and pin selectable
• Operating Voltageas Lowas 2.0V operating frequency. With the abilityto convert 3.3V
600kHz/1.3MHz Pin Selectable Frequency to multiple outputsof 8V, -8V, and 23V, the LM2622
Operation isan ideal part for biasing TFT displays. The LM2622
can be operatedat switching frequenciesof 600kHz
• Over Temperature Protection and 1.3MHz allowing for easy filtering and low noise.
• 8-Lead VSSOP Package An external compensation pin gives the user flexibility setting frequency compensation, which makes
APPLICATIONS possible the use of small, low ESR ceramic
capacitorsat the output. The LM2622is availableina
• TFT Bias Supplies low profile 8-lead VSSOP package.
• Handheld Devices Portable Applications GSM/CDMA Phones Digital Cameras
Typical Application Circuit
Figure1. 600 kHz Operation
