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Ordering number : ENA1157
LV8760T
Overview
Bi-CMOS LSI
Forward/Reverse H-bridge Driver
The LV8760T is an H-bridge driver that can control four operation modes (forward, reverse, brake, and standby) of a motor. The low on-resistance, zero standby current, highly efficnet IC is optimal for use in driving brushed DC motors for office equipment.
Features
* Forward/reverse H-bridge motor driver: 1 channel * Built-in current limiter circuit * Built-in thermal protection circuit * Built-in short-circuit protection function
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Supply voltage Symbol VM max VCC max Output peak current Output continuous current Logic input voltage Allowable power dissipation Operating temperature Storage temperature IO peak IO max VIN Pd max Topr Tstg Mounted on a specified board. * tw 20ms, duty 5% Conditions Ratings 38 6 4 3 -0.3 to VCC+0.3 3.3 -20 to +85 -55 to +150 Unit V V A A V W C C
* Specified circuit board : 90mmx90mmx1.6mm, glass epoxy 2-layer board (2S0P), with backside mounting.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment.
42308 MS PC 20080319-S00001 No.A1157-1/10
LV8760T
Allowable Operating Ratings at Ta = 25C
Parameter Supply voltage range Symbol VM VCC VREF input voltage Logic input voltage VREF VIN Conditions Ratings 9 to 35 3 to 5.5 0 to VCC-1.8 0 to VCC Unit V V V V
Electrical Characteristics at Ta = 25C, VM = 24V, VCC = 5V, VREF = 1.5V
Parameter General Standby mode current drain 1 Standby mode current drain 2 Operating mode current drain 1 Operating mode current drain 2 VREG output voltage VCC low-voltage cutoff voltage Low-voltage hysteresis voltage Thermal shutdown temperature Thermal hysteresis width Output block Output on resistance Ron1 Ron2 Output leakage current Rising time Falling time Input output delay time IOleak tr tf tpLH tpHL Charge pump block Step-up voltage Rising time Oscillation frequency Control system input block Logic pin input current 1 IINL IINH Logic pin input current 2 IINL IINH Logic pin input H-level voltage Logic pin input L-level voltage Current limiter block VREF input current Current limit comparator threshold voltage Short-circuit protection block SCP pin charge current Comparator threshold voltage Iscp Vthscp SCP = 0V 3.5 0.8 5 1 6.5 1.2 A V IREF Vthlim VREF = 1.5V -0.5 0.285 0.3 0.315 A V VINH VINL VIN = 0.8V adaptive pin : PS VIN = 5V adaptive pin : PS VIN = 0.8V adaptive pin : IN1, IN2 VIN = 5V adaptive pin : IN1, IN2 adaptive pin : PS, IN1, IN2 adaptive pin : PS, IN1, IN2 5.6 56 5.6 35 2.0 0.8 8 80 8 50 10.4 104 10.4 65 A A A A V V VGH tONG Fcp VM = 24V VG = 0.1F 115 28.0 28.7 250 140 29.8 500 165 V s kHz IO = 3A, sink side IO = -3A, source side VO = 35V 10% to 90% 90% to 10% IN1 or IN2 to OUTA or OUTB (L H) IN1 or IN2 to OUTA or OUTB (H L) 200 200 550 550 0.2 0.32 0.25 0.40 50 500 500 700 700 A ns ns ns ns IMst ICCst IM ICC VREG VthVCC VthHIS TSD TSD Design guarantee * Design guarantee * PS = "L" PS = "L" PS = "H", IN1 = "H", with no load PS = "H", IN1 = "H", with no load IO = -1mA 4.75 2.5 120 155 1 3 5 2.7 150 170 40 1 1 1.3 4 5.25 2.9 180 185 A A mA mA V V mV C C Symbol Conditions min Ratings typ max Unit
* Design guarantee value and no measurement is made.
No.A1157-2/10
LV8760T
Package Dimensions
unit : mm (typ) 3279
TOP VIEW 6.5 20 11 BOTTOM VIEW
4.4
6.4
1 0.65 (0.33) 0.22
10 0.15
0.5
Exposed Die-Pad
SIDE VIEW
0.08
1.2max
(1.0)
SANYO : TSSOP20J(225mil)
Pin Assignment
PGND 1 OUTB 2 OUTB 3 RNF 4 RNF 5 VM 6 VM 7 OUTA 8 OUTA 9 PS 10
20 VCC 19 SCP 18 VREF 17 IN2 16 IN1 15 REG5 14 CP1 13 CP2 12 VG 11 GND
LV8760T
No.A1157-3/10
LV8760T
Pd max - Ta
*1 With Exposed Die-Pad substrate *2 Without Exposed Die-Pad
4.0
Allowable power dissipation, Pd max - W
3.30 3.0
*1
2.0 1.60
*2
1.72
1.0 0.83
0 - 20
0
20
40
60
80
100
Ambient temperature, Ta - C
Substrate Specifications (Substrate recommended for operation of LV8760T) Size : 90mm x 90mm x 1.6mm (two-layer substrate [2S0P]) Material : Glass epoxy Copper wiring density : L1 = 95% / L2 = 95%
L1 : Copper wiring pattern diagram
L2 : Copper wiring pattern diagram
Cautions 1) The data for the case with the Exposed Die-Pad substrate mounted shows the values when 90% or more of the Exposed Die-Pad is wet. 2) For the set design, employ the derating design with sufficient margin. Stresses to be derated include the voltage, current, junction temperature, power loss, and mechanical stresses such as vibration, impact, and tension. Accordingly, the design must ensure these stresses to be as low or small as possible. The guideline for ordinary derating is shown below : (1)Maximum value 80% or less for the voltage rating (2)Maximum value 80% or less for the current rating (3)Maximum value 80% or less for the temperature rating 3) After the set design, be sure to verify the design with the actual product. Confirm the solder joint state and verify also the reliability of solder joint for the Exposed Die-Pad, etc. Any void or deterioration, if observed in the solder joint of these parts, causes deteriorated thermal conduction, possibly resulting in thermal destruction of IC.
No.A1157-4/10
M
+-
Block Diagram
CP1 CP2
VG
VM
OUTA
OUTB
RNF
Charge pump
PGND
Output preamplifier stage
Output preamplifier stage
REG5 Reference Voltage Circuit
TSD LVS Output control logic Oscillation circuit + Short-circuit Protection Circuit Current Limiter Circuit + VREF
LV8760T
PS
VCC
+SCP
GND
No.A1157-5/10
IN1
IN2
LV8760T
Pin Functions
Pin No. 16 17 Pin Name IN1 IN2 Pin Functtion Output control signal input pin 1. Output control signal input pin 2. Equivalent Circuit
VCC
10k
100k
GND
10 PS Power save signal input pin.
VCC
50k
10k 10k
50k GND
18 VREF Reference voltage input pin for output current limit setting.
VCC
500
GND
19 SCP Short-circiut protection circuit, detection time setting capacitor connection pin.
VCC
500
GND
20 VCC Power supply connection pin for control block. Continued on next page.
No.A1157-6/10
LV8760T
Continued from preceding page. Pin No. 6, 7 8, 9 4, 5 2, 3 1 Pin Name VM OUTA RNF OUTB PGND Pin Functtion Motor power-supply connection pin. OUTA output pin. Current sense resistor connection pin. OUTB output pin. Power ground. Equivalent Circuit
67
REG5
8 9
2 3
500 500
1 GND
14 13 12 CP1 CP2 VG Charge pump capacitor connection pin. Charge pump capacitor connection pin. Charge pump capacitor connection pin.
45
14
67
13
12
REG5
100
GND
15 REG5 Internal reference voltage output pin.
VM
2k
25k GND
11 GND Ground.
74k
No.A1157-7/10
LV8760T
DC Motor Driver 1.DCM output control logic
Contol Input PS L H H H H IN1 * L H L H IN2 * L L H H OUTA OFF OFF H L L Output OUTB OFF OFF L H L Mode Standby Output OFF CW (forward) CCW (reverse) Brake
2.Current limit control timing chart
Limit current Output current
OUTA
OUTB
toff
CHARGE
SLOW
Braking operation time in current limit mode can be set by connecting a capacitor between SCP and GND pins. This setting is the same as the time setting required to turn off the outputs when an output short-circuit occurs as explained in the section entitled "Output Short-circuit Protection Function." See "Output Short-circuit Protection Function," for the settinig procedure. 3.Setting the current limit value The current limit value of the DCM driver is determined by the VREF voltage and the resistance (RNF) connected across the RNF and GND pins using the following formula : Ilimit [A] = (VREF [V] /5) /RNF []) Assuming VREF = 1.5V, RNF = 0.2, the current limit is : Ilimit = 1.5V/5/0.2 = 1.5A
No.A1157-8/10
LV8760T
Output short-circuit protection function The LV8760T incorporates an output short-circuit protection circuit. It turns the ouputs off to prevent destruction of the IC if a problem such as an output pin being shorted to the motor power supply or ground occurs. 1.Protection function operation (Latch method) The short-circuit protection circuit is activated when it detects the output short-circuit state. If the short-circuit state continues for the internally preset period ( 4s), the protection circuit turns off the output from which the short-circuit state has been detected. Then it turns the output on again after a lapse of the timer latch time described later. If the short-circuit state is still detected, it changes all the outputs to the standby mode and retains the state. The latched state is released by setting the PS to L.
Output ON
H-bridge output state
Output ON
Output OFF
Standby state
Threshold voltage
SCP voltage
4s
Short-circuit detection state
Short- Release circuit
Short-circuit
Internal counter
1st counter start
1st counter 1st counter stop start
1st counter end
2nd counter start
2nd counter end
2.How to set the SCP pin constant (timer latch-up setting) The user can set the time at which the outputs are turned off when a short-circuit occurs by connecting a capacitor across the SCP and GND pins. The value of the capacitor can be determined by the following formula : Timer latch-up : Tocp Tocp C x V/I [s] V : Comparator threshold voltage (1V typical) I : SCP charge current (5A typical)
When a capacitor with a capacitance of 50pF is connected across the SCP and GND pins, for example, Tscp is calculated as follows : Tscp = 50pF x 1V/5A = 10s
No.A1157-9/10
LV8760T
Application Circuit Example
35k 15k 0.1F 1 2 3 0.22 M 10F -+ 4 5 6 7 8 9 Control input PGND OUTB OUTB RNF RNF VM VM OUTA OUTA VCC 20 SCP 19 100pF VREF 18 IN2 17 Control input IN1 16 REG5 15 0.1F CP1 14 0.1F CP2 13 0.1F VG 12 GND 11 10 PS +-
LV8760T
Setting the current limit value When VCC = 5V, Vref = 1.5V Ilimit = Vref/5/RNF = 1.5V/5/0.22 = 1.36A Setting the current limit regeneration time and short-circuit detection time Tscp C x V/I = 100pF x 1V/5A = 20s
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.,Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above.
This catalog provides information as of April, 2008. Specifications and information herein are subject to change without notice. PS No.A1157-10/10

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