UCD3138A_15 datasheet(7/83 Pages) TI

7 / 83 page

UCD3138A

www.ti.com

SLUSC66B – MARCH 2015 – REVISED MAY 2015

Device Comparison

3.1

Product Selection Matrix

UCD3138A 64 PIN

UCD3138A 40 PIN

FEATURE

(RGC)

(RMH)

ARM7TDMI-S core processor

31.25 MHz

High resolution DPWM outputs (250-ps resolution)

Number of high speed independent feedback loops (number of regulated output

voltages)

12-bit, 267ksps, general-purpose ADC channels

Digital comparators at ADC outputs

Flash memory (program)

32 kB

Flash memory (data)

2 kB

Flash security

√

RAM

4 kB

DPWM switching frequency

up to 2 MHz

Programmable fault inputs

1 + 2(1)

High speed analog comparators with cycle-by-cycle current limiting

7(2)

6(2)

UART (SCI)

1(1)

PMBus

√

Timers

4 (16 bit) and 1 (24 bit)

Timer PWM outputs

Timer capture inputs

1(1)

Watchdog

√

On chip oscillator

√

Power-on reset and brown-out reset

√

64 Pin VQFN (9 mm × 9

40 Pin WQFN (6 mm × 6

Package offering

mm)

Sync IN and sync OUT functions

√

Total GPIO (includes all pins with multiplexed functions such as, DPWM, fault

inputs, SCI, and so forth)

External interrupts

(1)

This number represents an alternate pin out that is programmable via firmware. See the UCD3138A Digital Power Peripherals

Programmer’s Manual for details.

(2)

To facilitate simple OVP and UVP connections both comparators B and C are connected to the AD03 pin.

Device Comparison

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