ST1117B SITI [Silicon Touch Technology Inc.], ST1117B Datasheet - Page 2

• Manufacturer Part Number: ST1117B
• Description: Single Coil Brushless DC Motor Drivers ( 1.5 to 8.5 Volts )
• Manufacturer: SITI [Silicon Touch Technology Inc.]

ST1117A / ST1117B / ST1117C
General Specifications
Features and Benefits
Pin Description
SP-ST1117ABC-A.007
protection, 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, suitable for 4-poles fan motor for ST1117B
With RD output for ST1117C
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, suitable for 8-poles fan motor for ST1117A
Thin, compact, highly reliable package (SOT-28)
FGR
VSS
HP
O1
The device is a single coil DC brushless motor driver IC with PWM control, lock
Single Coil Brushless DC Motor Drivers
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
O2
VDD
PWM
HN
( 1.5 to 8.5 Volts )
NO.
Version
1
2
3
4
5
6
7
8
NAME
PWM
FGR
VDD
VSS
HP
HN
O1
O2
：
A.007
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
ST1117A / ST1117B /ST1117C
DESCRIPTION
Page
：
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