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ISL91117 Datasheet(PDF) 2 Page - Renesas Technology Corp

Part # ISL91117
Description  High Efficiency Synchronous Boost Converter with 4.2A Switches and Output Disconnect
PDF  13 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

ISL91117 Datasheet(HTML) 2 Page - Renesas Technology Corp

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ISL91117
FN8569 Rev 3.01
Page 2 of 12
Nov 16, 2023
Block Diagram
Pin Configuration
ISL91117
(4x5 WLCSP)
TOP VIEW
OSC
ERROR
AMP
PVIN
PWM
CONTROL
PVIN
MONITOR
BLKG
VREF
REF
VOUT
B1
B2
B4
LX
GATE
DRIVERS
& ANTI-
SHOOT THRU
D1
VIN
THERMAL
SHUTDOWN
CURRENT
DETECT
B5
VOUT
MONITOR
D2
EN
D5 FB
B3 PGND
D4
GND
EN
EN
EN
EN
VOUT
CLAMP
C1
D3
MODE
C3
VOLTAGE
PROG.
EN
SOFT
DISCHARGE
A1
C2
A2
C4
A4
A5
C5
A3
Blocking FET
PWM
COMP
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
C1
C2
C3
C4
C5
D1
D2
D3
D4
D5
Pin Descriptions
PIN #
PIN
NAMES
DESCRIPTION
A5, B5, C5
VOUT Boost output. Connect 2x22µF capacitor to
PGND.
A4, B4, C4
LX
Switching node of the boost converter.
A3, B3, C3
PGND Power ground for high switching current.
A2, B2, C2
BLKG Blocking FET terminal. Connect the input side of
the inductor.
A1, B1, C1
PVIN
Power input. Range: 1.8V to 4.8V. Connect a 22µF
capacitor to PGND.
D1
VIN
Supply input. Range: 1.8V to 4.8V.
D2
EN
Logic input, drive HIGH to enable device.
D3
MODE Logic input, HIGH for auto PFM mode. LOW for
forced PWM operation. Also, this pin can be used
with an external clock sync input. Range:
2.75MHz to 3.25MHz. Maximum voltage on this
pin should be limited to VIN.
D4
GND
Analog ground pin.
D5
FB
Voltage feedback pin.



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