SH3100 Datasheet, PDF (6/80 Pages) Semtech Corporation – Supervisory IC with I2C Interface and PWM

POWER MANAGEMENT
Pin Configuration
16 15 14 13
GND 1
VREG 2
TOP VIEW
12 SDA
11 SCL
VDD 3
VBAK 4
10 _NRST
T
9 _INT
5678
MLPQ16: 3X3 16 LEAD
SH3100
Ordering Information
Device
SH3100IMTR⁽¹⁾
SH3100IMLTRT⁽²⁾
Package⁽²⁾
16-Pin MLP 3mm x 3mm x 0.9mm
Notes:
1) Available in tape and reel packaging only. A reel contains 3000
devices.
2) Available in lead-free packaging only. This product is fully
WEEE, RoHS and J-TD-020B compliant. This component and all
homogenous subcomponents are RoHS compliant.
Pin Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
Pin Name
GND
VREG
VDD
VBAK
XIN
XOUT
SNSE
GND
INT
NRST
SCL
SDA
PWM
Pin Function
Ground
1.6V regulated digital supply - generated internally from VDD - collapses to GND during battery
backup - may be left unconnected
Main supply (range is 1.7V to 5.5V)
Backup battery supply to maintain register contents and RTC operation when VDD collapses -
can be higher or lower than VDD - range is 0.9V to 5.5V - connect to VDD if not used
32.768kHz crystal oscillator input pin - tie to ground if not used - can be over driven by external
clock source up to 250kHz
32.768kHz crystal oscillator output pin - leave unconnected if not used
Sense input for fan speed control - spare analog input for switching regulator feedback or ADC
conversion - tri state (low, floating, or high) input pin used to select reset duration
Ground
Level, edge or toggling interrupt output, general-purpose input/output (GPIO)
Active-low system reset output - strong pull-down - weak pull-up - reset state is valid for VDD
levels down to 1V - can be externally over driven to trigger programmed duration reset
I²C clock - 400kHz fast mode compliant - operates up to 1MHz
I²C data - 400kHz fast mode compliant - operates up to 1MHz
General-purpose PWM or PDM output - fan control PWM output - LDO output regulated
down from VDD - programmable 3V to 4.5V in 18mV steps - 15mA drive capability - switching
regulator control output - drives Inductor directly in bootstrap boost mode, or external switching
FETs or bipolar transistors - directly drives inductor in bootstrap boost with internal switching
© 2006 Semtech Corp.
6
www.semtech.com