SX8122ISTRT Semtech, SX8122ISTRT Datasheet - Page 7

• Manufacturer Part Number: SX8122ISTRT
• Description: IC PWR MGMT SINGLE CELL 8-SOIC
• Manufacturer: Semtech

Specifications of SX8122ISTRT

• Applications: General Purpose
• Current - Supply: 80µA
• Voltage - Supply: 0.9 V ~ 2 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SX8122ISTR

ACS - Revision 2.2
© Semtech Corp.
TECHNICAL DESCRIPTION
4
4.1
4.2
ADVANCED COMMUNICATIONS & SENSING
System architecture
SX8122 architecture
The system is based on the cyclic acquisition of the TRIGGER and VDD voltages.
SX8122 timer behavior
The SX8122 has an internal level detector that compares the TRIGGER volatge to the VDD voltage. When
TRIGGER is above 2/3 of VDD, the comparator sets its output to high; when the TRIGGER is below 1/3 of VDD,
the comparator sets its output to low. As long as the TRIGGER voltage is between 1/3 VDD and 2/3 VDD, the
comparator output remains unchanged.
August 2010
DISCHARGE
TRIGGER
CHARGE
NIMH
2/3 VDD
1/3 VDD
Figure 2. SX8122 Architecture
VSS
VDD
1.41V
VDD
Page 7
R
S
Q
Q
BURST
MOTOR
VDD
VSS
LED
www.semtech.com/products/
1V Motor/LED timer
SX8122
DATASHEET