TLE6389G501NTMA1

TLE6389G501NTMA1 Datasheet

TLE 6389

Part	Datasheet
TLE6389G501NTMA1	TLE6389G501NTMA1 (pdf)

Related Parts	Information
TLE6389G50NTMA1	TLE6389G50NTMA1
TLE6389GV	TLE6389GV

PDF Datasheet Preview
Step-Down DC/DC Controller TLE 6389 Target Datasheet • Operation from 5V to 60V Input Voltage • 100% Maximum Duty Cycle • Efficiency >90% • Output Current up to 3A • Less than 100µA Quiescent Current P-DSO-14-3, -4, -9, -11 • 2µA Max Shutdown Current • Up to 350kHz Switching Frequency • Adjustable and Fixed 5V and 3.3V Output Voltage versions • 3% output voltage accuracy RSENSE= L1 = 47 µH VOUT IOUT PWM Mode • Current-Mode Control Scheme • On Chip Low Battery Detector CIN1 = 100 µF CBDS= 220 nF COUT = 100 µF • Ambient operation range -40°C to 125°C RSI1= RSI2= CIN2 = 220nF 13 BDS VS GDRV VOUT TLE6389G50-1 SO 10 M1 Infineon SPD09P06PL D1 Motorola MBRD360 L1 Coilcraft DO3340P-473 Cin1 TBD Cout Low ESR Tantalum SI_GND SI_ENABLE SYNC GND RD ON OFF CRD =100nF Type TLE 6389 GV TLE 6389 G50 TLE 6389 G50-1 TLE 6389 G33 TLE 6389 G33-1 Ordering Code on request on request on request on request on request Package P-DSO-14 P-DSO-14 P-DSO-14 P-DSO-14 P-DSO-14 Description adjustable 5V, Device Enable 5V, SI GND, SI Enable 3.3V, Device Enable 3.3V, SI GND, SI Enable 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. These step-down controllers drive an external P-channel MOSFET, allowing design flexibility for applications up to 3A. A high switching frequency up to 350kHz and 2001-09-17 TLE 6389 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 TLE6389-50 or 3.3V TLE6389-33 and adjustable for the TLE6389. Input voltages can be up to 60V. Pin Configuration top view ENABLE / SI_EN VOUT 3 GND 4 SYNC 5 SI_GND 6 P-D-SO-14 14 CS 13 VS 12 GDRV 11 BDS 10 RO 9 SO 8 RD Pin Definitions and Functions Pin No SO-14 Symbol Function Feedback Input. For adjustable-output operation connect to an external voltage divider between the output and GND see the Setting the Output Voltage section . Sense input for fixed 5V or 3.3V output operation. FB is internally connected to an on-chip voltage divider. VOUT VOUT Input. Input for internal supply. Connect to output if variable version is used. For fixed voltage version connect FB and VOUT. ENABLE Active-Low Enable Input. Device is placed in shutdown when Enable is driven low. In shutdown mode, the reference, output, and external MOSFET are turned off. Connect to logic high for normal operation. TLE6389G50, TLE6389G33, TLE6389GV only 2001-09-17 TLE 6389 Pin No SO-14 13 4 6 11 12 10 8 9 7 5 Symbol Function SI_ENA BLE SI Enable Input. SI_GND is switched to high impedance when SI_Enable is low. High level at SI_Enable connects SI_GND to GND via a low impedance path. SO is undefined when SI_Enable is low. TLE6389G501, TLE6389G33-1 only Supply Input. Bypass with 0.47µF. Ground. Analog signal ground. SI_GND SI Ground. Ground connection for SI comparator resistor devider. Buck Driver Supply Input. Connect ceramic capacitor between BDS and VS to generate clamped gate-source voltage to drive the PMOS power stage. Current-Sense Input. Connect current-sense resistor between VS and

PDF Datasheet Preview

Step-Down DC/DC Controller

TLE 6389

Target Datasheet
• Operation from 5V to 60V Input Voltage
• 100% Maximum Duty Cycle
• Efficiency >90%
• Output Current up to 3A
• Less than 100µA Quiescent Current

P-DSO-14-3, -4, -9, -11
• 2µA Max Shutdown Current
• Up to 350kHz Switching Frequency
• Adjustable and Fixed 5V and
3.3V Output Voltage versions
• 3% output voltage accuracy

RSENSE=

L1 = 47 µH

VOUT IOUT

PWM Mode
• Current-Mode Control Scheme
• On Chip Low Battery Detector

CIN1 = 100 µF

CBDS= 220 nF

COUT =
100 µF
• Ambient operation range -40°C to 125°C

RSI1=

RSI2=

CIN2 = 220nF
13 BDS VS

GDRV

VOUT

TLE6389G50-1

SO 10

M1 Infineon SPD09P06PL D1 Motorola MBRD360 L1 Coilcraft DO3340P-473 Cin1 TBD Cout Low ESR Tantalum

SI_GND SI_ENABLE SYNC GND RD

ON OFF

CRD =100nF

Type TLE 6389 GV TLE 6389 G50 TLE 6389 G50-1 TLE 6389 G33 TLE 6389 G33-1
Ordering Code on request on request on request on request on request

Package P-DSO-14 P-DSO-14 P-DSO-14 P-DSO-14 P-DSO-14

Description adjustable 5V, Device Enable 5V, SI GND, SI Enable 3.3V, Device Enable 3.3V, SI GND, SI Enable

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. These step-down controllers drive an external P-channel MOSFET, allowing design flexibility for applications up to 3A. A high switching frequency up to 350kHz and
2001-09-17

TLE 6389
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 TLE6389-50 or 3.3V TLE6389-33 and adjustable for the TLE6389. Input voltages can be up to 60V.

Pin Configuration top view

ENABLE / SI_EN

VOUT 3

GND 4

SYNC 5

SI_GND 6

P-D-SO-14
14 CS 13 VS 12 GDRV 11 BDS 10 RO 9 SO 8 RD

Pin Definitions and Functions

Pin No SO-14

Symbol Function

Feedback Input.

For adjustable-output operation connect to an external voltage divider
between the output and GND see the Setting the Output Voltage section .

Sense input for fixed 5V or 3.3V output operation. FB is internally
connected to an on-chip voltage divider.

VOUT

VOUT Input. Input for internal supply. Connect to output if variable version is used. For fixed voltage version connect FB and VOUT.

ENABLE

Active-Low Enable Input. Device is placed in shutdown when Enable is driven low. In shutdown mode, the reference, output, and external MOSFET are turned off. Connect to logic high for normal operation. TLE6389G50, TLE6389G33, TLE6389GV only
2001-09-17

TLE 6389

Pin No SO-14
13 4 6 11
12 10 8 9 7 5

Symbol Function

SI_ENA BLE

SI Enable Input. SI_GND is switched to high impedance when SI_Enable is low. High level at SI_Enable connects SI_GND to GND via a low impedance path. SO is undefined when SI_Enable is low. TLE6389G501, TLE6389G33-1 only

Supply Input. Bypass with 0.47µF.

Ground. Analog signal ground.

SI_GND SI Ground. Ground connection for SI comparator resistor devider.

Buck Driver Supply Input. Connect ceramic capacitor between BDS and VS to generate clamped gate-source voltage to drive the PMOS power stage.

Current-Sense Input. Connect current-sense resistor between VS and

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Datasheet ID: TLE6389G501NTMA1 638792