IFX 80471SK V50 Infineon Technologies, IFX 80471SK V50 Datasheet - Page 5

• Manufacturer Part Number: IFX 80471SK V50
• Manufacturer: Infineon Technologies

Specifications of IFX 80471SK V50

• Packages: PG-DSO-14
• Comment: Vin up to 60V; external MOS; PG-DSO-14
• Vq (max): 5.0 V
• Iq (max): 2,300.0 mA
• Iq (typ): 130.0 µA
• Output: Buck Converter

3
3.1
Figure 2
3.2
Pin
1
1
2
3
Data Sheet
Symbol
ENABLE
SI_ENABLE
FB
VOUT
Pin Configuration
Pin Assignment
Pin Configuration
Pin Definitions and Functions
SI_ENABLE
ENABLE /
SI_GND
VOUT
SYNC
GND
Function
Active-High enable input (only adjustable version, IFX80471SKV) for the
device.
The device is shut down when ENABLE is driven low. In this shut down-mode the
reference, the output and the external MOSFET are turned off. Connect to logic high
for normal operation.
Active-High enable input (only 5V version, IFX80471SKV50) for SI_GND input.
SI_GND is switched to high impedance when SI_ENABLE is low. High level at
SI_ENABLE connects SI_GND to GND with low impedance. SO is undefined when
SI_ENABLE is low.
Feedback input.
1. For adjustable version (IFX80471SKV) connect this pin to an external voltage
divider from the output to GND (see
2. For the 5V fixed output voltage version (IFX80471SKV50) the FB is connected to
an on-chip voltage divider supplied internally by VOUT. It does not have to be
connected externally to the output.
Buck output voltage input.
Input for the internal supply. Connect always to the output of the buck converter
(output capacitor).
FB
SI
1
2
3
4
5
6
7
5
Chapter
14
13
12
11
10
9
8
7.2).
CS
VS
GDRV
BDS
RO
SO
COMP
Rev. 1.0, 2011-02-07
Pin Configuration
IFX80471