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UPD16803

NEC
Part Number UPD16803
Manufacturer NEC
Description MONOLITHIC DUAL H BRIDGE DRIVER CIRCUIT
Published Apr 17, 2005
Detailed Description DATA SHEET MOS INTEGRATED CIRCUIT µPD16803 MONOLITHIC DUAL H BRIDGE DRIVER CIRCUIT DESCRIPTION The µPD16803 is a mono...
Datasheet PDF File UPD16803 PDF File

UPD16803
UPD16803

Overview
DATA SHEET MOS INTEGRATED CIRCUIT µPD16803 MONOLITHIC DUAL H BRIDGE DRIVER CIRCUIT DESCRIPTION The µPD16803 is a monolithic dual H bridge driver circuit which uses N-channel power MOS FETs in its driver stage.
By employing the power MOS FETs for the output stage, this driver circuit has a substantially improved saturation voltage and power consumption as compared with conventional driver circuits that use bipolar transistors.
In addition, the drive current can be adjusted by an external resistor in a power-saving mode.
The µPD16803 is therefore ideal as the driver circuit of the 2-phase excitation, bipolar-driven stepping motor for the head actuator of an FDD.
FEATURES • Low ON resistance (sum of ON resistors of top and bottom transistors) RON1 = 1.
5 Ω TYP.
(VM = 5.
0 V) RON2 = 2.
0 Ω TYP.
(VM = 12.
0 V) • Low current consumption: IDD = 0.
4 mA TYP.
• Stop mode function that turns OFF all output transistors • Compact surface mount package: 20-pin plastic SOP (300 mil) PIN CONFIGURATION (Top View) C1H C2L VM1 1A PGND 2A VDD IN1 IN2 INC 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 C1L C2H VG 1B PGND 2B VM2 RX PS DGND Document No.
S11452EJ2V0DS00 (2nd edition) Date Published July 1997 N Printed in Japan © 1997 µPD16803 ORDERING INFORMATION Part Number Package 20-pin plastic SOP (300 mil) µPD16803GS BLOCK DIAGRAM 0.
01 µ F VDD C1L C1H C2L 0.
01 µ F C2H VG 0.
01 µ F OSC CIRCUIT CHARGE PUMP 2 × VDD + VM Note 1 VM VM1 RX BAND GAP REFERENCE LEVEL CONTROL CIRCUIT “H” BRIDGE 1 Note 2 1A 1B PGND VM2 Note 3 PS SWITCH CIRCUIT 50 kΩ 50 kΩ 50 kΩ IN1 IN2 INC DGND PGND CONTROL CIRCUIT LEVEL SHIFT 2A “H” BRIDGE 2 2B 50 kΩ Connected in diffusion layer Notes 1.
3 × VDD where VM ≤ VDD 2.
The power-saving mode is set when the PS pin goes high.
In this mode, the voltage of the charge pump circuit is lowered and the ON resistance of the H bridge driver transistor increases, limiting the current.
In the power-saving mode, the motor cannot turn.
3.
It is recomm...


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