UCD3138 datasheet(8/99 Pages) TI2

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6.2 Product Selection Matrix

FEATURE

UCD3138 64 PIN

(RGC)

UCD3138 40 PIN

(RHA/RMH/RJA)

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

√

Package offering

64 Pin QFN (9 mm × 9 mm) 40 Pin QFN (6 mm × 6 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 UCD3138 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.

UCD3138

SLUSAP2J – MARCH 2012 – REVISED NOVEMBER 2021

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