Datasheet

UCD3138
SLUSAP2F –MARCH 2012 –REVISED NOVEMBER 2013 www.ti.com
2.2 Ordering Information
OPERATING TEMPERATURE
PART NUMBER PIN COUNT PACKAGE SUPPLY TOP SIDE MARKING
RANGE, T
A
UCD3138RGCT 64 QFN 250 (Small Reel) UCD3138 –40°C to 125°C
UCD3138RGCR 64 QFN 2000 (Large Reel) UCD3138 –40°C to 125°C
UCD3138RHAT 40 QFN 250 (Small Reel) UCD3138 –40°C to 125°C
UCD3138RHAT 40 QFN 250 (Small Reel) UCD3138 –40°C to 125°C
UCD3138RMHT 40 QFN 250 (Small Reel) 3138RMH –40°C to 125°C
UCD3138RMHR 40 QFN 250 (Large Reel) 3138RMH –40°C to 125°C
2.3 Product Selection Matrix
UCD3138 64 PIN UCD3138 40 PIN
FEATURE
(RGC) (RHA/RMH)
ARM7TDMI-S Core Processor 31.25 MHz 31.25 MHz
High Resolution DPWM Outputs (250ps Resolution) 8 8
Number of High Speed Independent Feedback Loops (# Regulated Output
3 3
Voltages)
12-bit, 267ksps, General Purpose ADC Channels 14 7
Digital Comparators at ADC Outputs 4 4
Flash Memory (Program) 32 KB 32 KB
Flash Memory (Data) 2 KB 2 KB
Flash Security √ √
RAM 4 KB 4 KB
DPWM Switching Frequency up to 2 MHz up to 2 MHz
Programmable Fault Inputs 4 1 + 2
(1)
High Speed Analog Comparators with Cycle-by-Cycle Current Limiting 7
(2)
6
(2)
UART (SCI) 2 1
(1)
PMBus √ √
Timers 4 (16 bit) and 1 (24 bit) 4 (16 bit) and 1 (24 bit)
Timer PWM Outputs 2 1
Timer Capture Inputs 1 1
(1)
Watchdog √ √
On Chip Oscillator √ √
Power-On Reset and Brown-Out Reset √ √
Package Offering 64 Pin QFN (9mm x 9mm) 40 Pin QFN (6mm x 6mm)
Sync IN and Sync OUT Functions √ √
Total GPIO (includes all pins with multiplexed functions such as, DPWM, Fault
30 18
Inputs, SCI, etc.)
External Interrupts 1 0
(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.
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