tle6389 Infineon Technologies Corporation, tle6389 Datasheet - Page 2

• Manufacturer Part Number: tle6389
• Description: Step - Down Dc/dc Controller
• Manufacturer: Infineon Technologies Corporation

Target Datasheet Rev. 1.7
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
Pin Definitions and Functions
Pin No
SO-14
2
3
1
Symbol
FB
VOUT
ENABLE Active-Low Enable Input. Device is placed in shutdown when Enable is
Function
Feedback Input.
1. For adjustable-output operation connect to an external voltage divider
between the output and GND (see the Setting the Output Voltage section).
2. Sense input for fixed 5V or 3.3V output operation. FB is internally
connected to an on-chip voltage divider.
VOUT Input.
Input for internal supply. Connect to output if variable version is used. For
fixed voltage version connect FB and VOUT.
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)
ENABLE /
SI_GND
SI_EN
VOUT
SYNC
GND
)
FB
SI
1
2
3
4
5
6
7
x x x
x x x
x x x
x x x
x x x
P-D-SO-14
2
14
13
12
11
10
9
8
CS
VS
GDRV
BDS
RO
SO
RD
TLE 6389
2001-09-17