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DC2317A: 5V @ 2.3A, 5 ~ 100V in

Summary

Demonstration circuit 2317A is a 100V monolithic DC/DC step-down regulator featuring the LTC®7103. The demo board is designed for a 5V/2.3A output from a 5V to 100V input at 400kHz switching frequency.

The wide input range makes it suitable for automotive, industrial, medical instrument, and telecom applications. This buck regulator has a peak efficiency of 93.5% at 12VIN, 88.3% at 48VIN and 81.5% at 100VIN (see Figure 3).

Specifications

Manufacturer Linear Technology/Analog Devices
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number DC2317A-ND
Eval Board Supplier Linear Technology/Analog Devices
Eval Board Normally In Stock
Topology Step Down
Outputs and Type 1 Non-Isolated
Output Voltage: Factory Set 5 V
Current Out 2.3 A
Voltage In 5 ~ 100 V
Efficiency @ Conditions >93%, 6V in, 5V @ 0.02 ~ 1A (Burst)
>92%, 12V in, 5V @ 4mA ~ 1.4A (Burst)
>90%, 6V in, 5V @ 0.1 ~ 1.3A
>89%, 24V in, 5V @ 5mA ~ 2A (Burst)
>87%, 48V in, 5V @ 0.7 ~ 2.3A
>87%, 36V in, 5V @ 0.5 ~ 2.3A
>87%, 36V in, 5V @ 0.03 ~ 2.3A (Burst)
>87%, 24V in, 5V @ 0.3 ~ 2.3A
>87%, 12V in, 5V @ 0.1 ~ 2.3A
>85%, 6V in, 5V @ 0.06 ~ 2.3A
>85%, 60V in, 5V @ 0.8 ~ 2.3A
>85%, 48V in, 5V @ 0.008 ~ 2.3A (Burst)
>84%, 72V in, 5V @ 1 ~ 2.3A
>83%, 60V in, 5V @ 0.02 ~ 2.3A (Burst)
Voltage Out Range 1 V ~ Vin
Features Current Limit (Adj. or Fixed)
Light Load Mode
Over Voltage Protection
Power Good Output
Short Circuit Protection
Shutdown, Enable, Standby
Soft Start
Synchronizable
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 400 kHz
Standby Current [Typical] 700 nA
Quiescent Current [Typical] 4.4 mA
Component Count + Extras 22 + 16
Internal Switch Yes
Design Author Linear Technology
Application / Target Market Automotive
Industrial Power
Medical
Telecom
Main I.C. Base Part LTC7103
Standby Current [Maximum] 8 µA
Quiescent Current [Maximum]

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