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TLE6389G 50-1 |TLE6389G501INFINEONN/a5000avaiStep-Down DC/DC Controller


TLE6389G 50-1 ,Step-Down DC/DC ControllerFeatures• Input voltage range from < 5V up to 60V• Output voltage versions: 5V fixed and adjustable ..
TLE6389G 50 ,Step-Down DC/DC ControllerFeatures• Operation from 5V to 60V Input Voltage• 100% Maximum Duty Cycle• Efficiency >90%• Output ..
TLE6389G50 ,Step-Down DC/DC ControllerFunctional descriptionThe TLE6389 step-down DC-DC switching controllers provide high efficiency ove ..
TLE6389G50 ,Step-Down DC/DC ControllerFunctional descriptionThe TLE6389 step-down DC-DC switching controllers provide high efficiency ove ..
TLE6389G50 ,Step-Down DC/DC ControllerFeatures• Operation from 5V to 60V Input Voltage• 100% Maximum Duty Cycle• Efficiency >90%• Output ..
TLE6389G50-1 ,Step-Down DC/DC Controller Step-Down DC/DC Controller TLE 6389Target Datasheet
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TLE6389G 50-1
Step-Down DC/DC Controller
Step-Down DC/DC Controller
Preliminary data sheet
TLE 6389
1Overview
1.1Features
Input voltage range from < 5V up to 60VOutput voltage versions: 5V fixed and adjustableOutput voltage accuracy: 3%Load current peak determined by sense resistorOutput power up to 15W and above100% maximum duty cycleLess than 100µA quiescent current at low loads2µA max. shutdown current at device offFixed 350kHz switching frequencyFrequency synchronization input for external clocksCurrent Mode control schemeIntegrated output under voltage Reset circuit with
adjustable delay timeOn chip low battery detector (on chip comparator)Automotive temperature range
TLE 6389
1.2Short functional description

The TLE6389 step-down DC-DC switching controllers provide high efficiency over loads
ranging from 1mA up to 3A. A unique PWM/PFM control scheme operates with up to a
100% duty cycle, resulting in very low dropout voltage. This control scheme eliminates
minimum load requirements and reduces the supply current under light loads to 100µA.
For the start up procedure a slow start feature is implemented to avoid overshoots at the
output. The TLE6389 step-down controllers drive an external P-channel MOSFET,
allowing design flexibility for applications up to 15W of output power. A high switching
frequency and operation in continuous-conduction mode allow the use of tiny surface-
mount inductors. Output capacitor requirements are also reduced, minimizing PC board
area and system costs. The output voltage is preset at 5V (TLE6389G50-1 and
TLE6389G50) and adjustable for the TLE6389GV. Input voltages can be up to 60V.
1.3Pin Configuration (top view)
TLE 6389
1.4Basic block diagram
TLE 6389
1.5Pin Definitions and Functions
TLE 6389


TLE 6389Absolute Maximum Ratings
TLE 6389Absolute Maximum Ratings (cont’d)
TLE 6389
Note:Maximum ratings are absolute ratings; exceeding any one of these values may
cause irreversible damage to the integrated circuit. Absolute Maximum Ratings (cont’d)
TLE 6389Operating Range
TLE 6389Electrical Characteristics
5VAll voltages with respect to ground; positive current defined flowing into the pin; unless otherwise specified
TLE 6389Electrical Characteristics (cont’d)
5VAll voltages with respect to ground; positive current defined flowing into the pin; unless otherwise specified
TLE 6389Electrical Characteristics (cont’d)
5VAll voltages with respect to ground; positive current defined flowing into the pin; unless otherwise specified
TLE 6389Electrical Characteristics (cont’d)
5VAll voltages with respect to ground; positive current defined flowing into the pin; unless otherwise specified
TLE 6389Electrical Characteristics (cont’d)
5VAll voltages with respect to ground; positive current defined flowing into the pin; unless otherwise specified
TLE 6389Electrical Characteristics (cont’d)
5VAll voltages with respect to ground; positive current defined flowing into the pin; unless otherwise specified
TLE 6389Electrical Characteristics (cont’d)
5VAll voltages with respect to ground; positive current defined flowing into the pin; unless otherwise specified
TLE 6389Electrical Characteristics (cont’d)
5VAll voltages with respect to ground; positive current defined flowing into the pin; unless otherwise specified
TLE 6389Electrical Characteristics (cont’d)
5VAll voltages with respect to ground; positive current defined flowing into the pin; unless otherwise specified
TLE 6389The device current measurements for IVS and IFB exclude MOSFET driver currents.Not subject to production test - specified by designElectrical Characteristics (cont’d)
5VAll voltages with respect to ground; positive current defined flowing into the pin; unless otherwise specified
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