DC2235A: ±5V, 15V, 24V @ 50mA, 4.5 ~ 16V in

Summary

Demonstration Circuit 2235A has boost and inverting charge pumps each with a low noise LDO post regulator featuring the LTC®3265EDHC. The LTC3265 operates with an input voltage from 4.5V to 16V for the boost charge pump and from 4.5V to 32V for the inverting charge pump.

The demo board provides selectable LDO± output set magnitudes of 5V, 15V, and 24V for each polarity. The demo board also provides the means to select between low power Burst Mode® operation or low noise constant-frequency mode operation, plus select an operating frequency of 500kHz, 200kHz, or 50kHz.

The LTC3265 data sheet gives a complete description of the device, operation and application information. The data sheet must be read in conjunction with this demo manual.

Specifications

Manufacturer	Analog Devices Inc.
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Multi Output
Eval Board Part Number	DC2235A-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Topology	Step Up
Outputs and Type	4 Non-Isolated
Voltage Out: Highest Current First	±5V, 15V, 24V
Current Out	50mA per Channel
Voltage In	4.5 ~ 16 V (Boost), 4.5 ~ 32 V (Inv.)
Efficiency @ Conditions	- Not Given
Voltage Out Range	0.94 to 2x Vinp (Boost), -0.94 to Vinn (Inv)
Features	Current Limit (Adj. or Fixed) LDO Regulator(s), On-Chip Short Circuit Protection Shutdown, Enable, Standby Thermal Protection
Switching Frequency	500 kHz
Standby Current [Typical]	3 µA (Boost), 1 µA (Inv)
Quiescent Current [Typical]	3 mA (Boost), 3 mA (Inv)
Component Count + Extras	13 + 27
Internal Switch	Yes
Design Author	Linear Technology
Application / Target Market	Power: Auxiliary Power Supply Power: Industrial Power RF: Metering
Standby Current [Maximum]	6 µA (Boost) 3 µA (Inv)
Quiescent Current [Maximum]	6 mA (Boost), 5 mA (Inv)
Main I.C. Base Part	LTC3265
Date Created By Author	2015-05
Date Added To Library	2016-03