st1117a Silicon Touch Technology Inc., st1117a Datasheet - Page 2

• Manufacturer Part Number: st1117a
• Description: Single Coil Brushless Dc Motor Drivers
• Manufacturer: Silicon Touch Technology Inc.

ST1117A(-P/-M) / ST1117B(-P/-M) / ST1117C(-P/-M)
General Specifications
Features and Benefits
Single Coil Brushless DC Motor Drivers
power polarity reverse protection and frequency generator. The driver is optimal for single coil fan
applications with less external components.
Reduces the numbers of external component required
With FG output for ST1117B / ST1117B-P / ST1117B-M
With RD output for ST1117C / ST1117C-P / ST1117C-M
Support single-phase full wave Brushless DC Motor Driver
Built-in Hall sensor input amplifier
Low voltage startup (VDD=1.5V)
High output sinking and driving capability
Lock detection and automatic self-restart
Without external timing capacitor,
External PWM control signal input
With FG/2 output for ST1117A / ST1117A-P / ST1117A-M
Thin, compact, highly reliable package (SOT-28, TSOT-28, SOP-8, MSOP-8)
Thermal shutdown protection
Pin Description
ST1117A / ST1117B / ST1117C : SOT-28, TSOT-28
The device is a single coil DC brushless motor driver IC with PWM control, lock protection,
FGR
VSS
HP
O1
Single Coil Brushless DC Motor Drivers
TSOT
SOT
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O2
VDD
PWM
HN
( 1.5 to 8.5 Volts )
Package : SOT-28 / TSOT-28
NO.
1
2
3
4
5
6
7
8
Version：A.013
NAME
PWM
VSS
FGR
VDD
HN
O1
HP
O2
Output driving & sinking pin
Ground pin
Frequency generator or rotating detector
ST1117A : FG/2
ST1117B : FG
ST1117C : RD
Hall sensor in+
Hall sensor in-
Input pin for PWM Control
Power supply pin
Output driving & sinking pin
DESCRIPTION
ST1117A/ST1117B/ST1117C
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