SI9166DB-K Vishay, SI9166DB-K Datasheet

Pulse Width Modulation (PWM) Controller IC

SI9166DB-K

Manufacturer Part Number
SI9166DB-K
Description
Pulse Width Modulation (PWM) Controller IC
Manufacturer
Vishay
Datasheet

Specifications of SI9166DB-K

Silicon Manufacturer
Vishay
Application Sub Type
Programmable Topology Controller
Kit Application Type
Power Management - Voltage Regulator
Silicon Core Number
SI9166
Kit Contents
Board
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
DESCRIPTION
The Si9166 is a programmable topology controller for today’s
continuous changing portable electronic market. Si9166
provides flexibility of utilizing various battery configurations
and chemistries such as NiCd, NiMhy, or Li+ with input voltage
range of 2.7 V to 6 V. An additional flexibility is provided with
topology programmability to power multiple loads such as
power amplifiers, microcontrollers, or baseband logic IC’s.
The converters can be programmed to be synchronous Buck
or Boost topology. For ultra-high efficiency, converters are
designed to operate in synchronous rectified PWM mode
under full load while transforming into externally controlled
Document Number: 70847
S-40701—Rev. C, 19-Apr-04
FEATURES
D Buck or Boost Configuration
D Voltage Mode Control
D 2.7-V to 6-V Input Voltage Range for V
D Programmable PWM/PSM Control
TYPICAL APPLICATION CIRCUITS
PWM/PSM
− Up to 2-MHz Switching Frequency in PWM
− Synchronous Rectification in PWM
− Less than 200-mA I
SYNC
N/C
V
SD
IN
High Frequency Programmable Topology Controller
V
N/C
DH
PWM/PSM PGND
SYNC
GND
REF
FB
S
Buck Configuration
Si9166
DD
MODE
COMP
R
in PSM
V
OSC
SD
V
DL
DD
O
Si6803
D
S
S
G
1
1
1
G
S
S
D
2
2
2
DD
and V
S
V
OUT
pulse skipping mode (PSM) under light load. All these features
are provided by the Si9166 without sacrificing system
integration requirements of fitting these circuits into ever
demanding smaller and smaller space. The Si9166 is capable
of switching up to 2 MHz to minimize the output inductor and
capacitor size in order to decrease the overall converter size.
The Si9166 is available in both standard and lead (Pb)-free
TSSOP-16 pin packages and specified to operate over the
industrial temperature range of −25_C to 85_C.
PWM/PSM
SYNC
D Integrated UVLO and POR
D Integrated Soft-Start
D Synchronization
D Shutdown Current <1 mA
N/C
V
SD
IN
V
N/C
DH
PWM/PSM PGND
SYNC
GND
REF
FB
S
Boost Configuration
Si9166
MODE
COMP
R
V
OSC
SD
V
DL
DD
O
Si6803
D
S
S
G
Vishay Siliconix
1
1
1
G
S
S
D
2
2
2
www.vishay.com
Si9166
V
OUT
1

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SI9166DB-K Summary of contents

Page 1

... MHz to minimize the output inductor and capacitor size in order to decrease the overall converter size. The Si9166 is available in both standard and lead (Pb)-free TSSOP-16 pin packages and specified to operate over the industrial temperature range of −25_C to 85_C. V OUT N/C PWM/PSM SYNC Vishay Siliconix Si6803 ...

Page 2

... Si9166 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Voltages Referenced to GND MODE, PWM/PSM, SYNC, SD REF OSC COMP PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

... FB COMP Sink (V = 1. COMP − OUT OUT MHz DD OSC Si9166 Vishay Siliconix Limits Min Typ Max Unit 2 − 1.2 1 − 1.270 1.30 1.330 1.258 1.30 1.342 2 −3 − 3.18 3.24 0.06 0.12 −750 −500 500 750 ...

Page 4

... Si9166 Vishay Siliconix TYPICAL CHARACTERISTICS (25_C UNLESS OTHERWISE NOTED) V vs. V REF DD 1.310 1.305 1.300 1.295 1.290 2.0 2.5 3.0 3.5 4.0 4.5 V − (V) DD Frequency vs. Temperature 2.00 1.95 1.90 R OSC 1.85 1.80 1.75 1.70 −100 − Temperature (_C) Buck Mode Efficiency, V 100 PSM− ...

Page 5

... Determines the converter topology. Connect to AGND for Buck or V Document Number: 70847 S-40701—Rev. C, 19-Apr- ORDERING INFORMATION MODE Part Number SD DL Si9166BQ-T1 PGND Si9166BQ-T1— Eval Kit R OSC Si9166DB COMP Description , or logic high. DD Vishay Siliconix PSM Supply Current 250 200 150 100 − (V) DD Temperature Range Package − ...

Page 6

... Si9166 Vishay Siliconix FUNCTIONAL BLOCK DIAGRAM 1.3 V Reference Threshold Generator V REF FB COMP SYNC Oscillator R OSC C OSC V O PWM/PSM MODE DETAIL OPERATIONAL DESCRIPTION Start-Up The UVLO circuit prevents the controller output driver and oscillator circuit from turning on, if the voltage on V than 2.5 V. With typical UVLO hysteresis of 0.1 V, controller is ...

Page 7

... In order to minimize the response time, the Si9166 is designed with For example, 2-MHz error amplifier gain-bandwidth product to generate the widest converter bandwidth and 3.5 V/msec slew rate for ultra-fast large signal response. Si9166 Vishay Siliconix The small signal response is www.vishay.com 7 ...

Page 8

... Si9166 Vishay Siliconix Oscillator The oscillator is designed to operate up to 2-MHz minimal. The 2-MHz operating frequency allows the converter to minimize the inductor and capacitor size, improving the power density of the converter. Even with 2-MHz switching frequency, quiescent current is only 500 mA with unique power saving circuit design ...

Page 9

... Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’ ...

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