UCC29421PWTR

Switching Frequency :
Output Current :
Duty Cycle (Max) :
Number of Outputs : 1
Maximum Operating Temperature : + 85 C
Mounting Style : SMD/SMT
Package / Case : TSSOP-16
Input Voltage : 1.8 V to 8 V
Output Voltage : 2.5 V to 8 V


Pinout




Description

The UCC29421PWTR is optimized to operate from dual alkaline/NiCd cells or a single Lithium-Ion (Li-Ion) cell, and convert to adjustable output voltages from 2.5 V to 8 V. The features of UCC29421PWTR are: (1)Operation Down to an Input Voltage of 1.8 V; (2)High Efficiency Boost, SEPIC or Flyback (Buck-Boost) Topologies; (3)Drives External FETs for High-Current Applications; (4)Up to 2-MHz Oscillator; (5)Synchronizable Fixed Frequency Operation; (6)High-Efficiency Low-Power Mode.

The following is about the absolute maximum ratings of UCC29421PWTR: (1)Supply Voltage (VIN, VOUT,VPUMP): 8 V; (2)CP: 8 V; (3)RSEN: 0.3 V to 12 V; (4)SYNC/SD:  0.3 V to 5 V; (5)ISENSE: 0.3 V to 1 V; (6)Storage Temperature, Tstg: 65°C to 150°C; (7)Junction Temperature, TJ: 55°C to 150°C; (8)Lead Temperature (Soldering, 10 seconds): 300°C.

The electrical characteristics of the UCC29421PWTR are: (1)minimum start-up voltage: 1.5V typ and 1.8V max; (2)operating current: .5A typ and 60A max; (3)sleep mode current: 35A typ and 60A max; (4)shutdown supply current: 1.5A typ and 4A max; (5)startup frequency: 60kHz min, 120kHz typ and 190kHz max at VIN=1.8V; (6)startup off time: 2s and 5s max at VIN=1.8V; (7)startup CS threshold: 36mV typ and 56mV max.

Parameters:

Technical/Catalog Information	UCC29421PWTR
Vendor	Texas Instruments
Category	Integrated Circuits (ICs)
PWM Type	Voltage/Current Mode
Number of Outputs	1
Package / Case	*
Packaging	*
Duty Cycle	88%
Voltage - Supply	1.5 V ~ 8 V
Frequency-Max	2MHz
Buck	Yes
Boost	Yes
Flyback	Yes
Inverting	No
Doubler	No
Divider	No
Cuk	No
Isolated	No
Drawing Number	*
Operating Temperature	-40°C ~ 85°C
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	UCC29421PWTR UCC29421PWTR