LTC1156 Quad High Side Micropower MOSFET Driver with Internal Charge Pump

FEATURES DESCRIPTIO U ■ No External Charge Pump Components The LTC1156 quad High side gate driver allows using low ■ Fully Enhances N-Channel Power MOSFETs cost N-channel FETs for high side switching applications. ■ 16 Microamps Standby Current An internal charge pump boosts the gate drive voltage ■ 95 Microamps ON Current above the positive rail, fully enhancing an N-channel MOS ■ Wide Power Supply Range 4.5V to 18V switch with no external components. Micropower opera- ■ Controlled Switching ON and OFF Times tion, with 16µA standby current and 95µA operating ■ Replaces P-Channel High Side Switches current, allows use in virtually all systems with maximum ■ Compatible with Standard Logic Families efficiency.

■ Available in 16-pin SOL Package

Included on chip is independent over-current sensing to

U O provide automatic shutdown in case of short circuits. A APPLICATI S time delay can be added to the current sense to prevent false triggering on high in-rush current loads. ■ Laptop Computer Power Switching ■ SCSI Termination Power Switching The LTC1156 operates off of a 4.5V to 18V supply and is ■ Cellular Telephone Power Management well suited for battery-powered applications, particularly ■ P-Channel Switch Replacement where micropower “sleep” operation is required. ■ Battery Charging and Management The LTC1156 is available in both 16-pin DIP and 16-pin ■

Low Frequency H-Bridge Driver SOL packages.

■ Stepper Motor and DC Motor Control U

TYPICAL APPLICATI O Laptop Computer Power Management Standby Supply Current

5V 100 V = V = V = V = 0V + 90 IN1 IN2 IN3 IN4 10µF 0.1µF *30mΩ TJ = 25°C 100k 80

VS VS A) DS1 µ 70 DS2 60 5V DS3 HARD DISK 50 DS4 Si9956DY DRIVE 40 LTC1156 IN1 G1 30 FLOPPY DISK SUPPLY CURRENT ( CONTROL IN2 G2 DRIVE 20 LOGIC OR µP IN3 G3 10 IN4 G4 Si9956DY DISPLAY 0 GND GND 0 5 10 15 20 SUPPLY VOLTAGE (V)

PERIPHERAL LTC1156 G01

ALL COMPONENTS SHOWN ARE SURFACE MOUNT. MINIMUM PARTS COUNT SHOWN. CURRENT LIMITS CAN BE SET SEPARATELY AND TAILORED TO INDIVIDUAL LOAD CHARACTERISTICS. * IMS026 INTERNATIONAL MANUFACTURING SERVICES, INC. (401) 683-9700 1156 TA01 1

LTC1156

W W W

ABSOLUTEXIA U RA TIGU S Supply Voltage ...... 22V Operating Temperature Range Input Voltage ...... (VS + 0.3V) to (GND – 0.3V) LTC1156C ...... 0°C to 70°C

Gate Voltage ...... (VS + 24V) to (GND – 0.3V) Storage Temperature Range ...... –65°C to 150°C

Current (Any Pin)...... 50mA Lead Temperature (Soldering, 10 sec.)...... 300°C WU

PACKAGE/ORDER I FOR ATIO U TOP VIEW ORDER PART TOP VIEW ORDER PART GND 1 16 G1 NUMBER GND1 16G1 NUMBER IN1 2 15 DS1 IN12 15DS1

VS 3 14 G2 LTC1156CN VS3 14G2 LTC1156CS IN2 4 13 DS2 IN24 13DS2 IN3 5 12 DS3 IN35 12DS3 GND 6 11 G3 GND6 11G3 IN4 7 10 DS4 IN47 10DS4

VS 8 9 G4 VS 8 9 G4

N PACKAGE S PACKAGE 16-LEAD PLASTIC DIP 16-LEAD PLASTIC SOL

TJMAX = 110°C, θJA = 120°C/W TJMAX = 110°C, θJA = 130°C/W Consult factory for Industrial and Military grade parts.

ELECTRICAL CHARA C TERISTICS VS = 4.5V to 18V, TA = 25°C, unless otherwise noted.

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

VS Supply Voltage (Note 1) ● 4.5 18 V

IQ Quiescent Current OFF VS = 5V, VIN = 0V (Note 2) 16 40 µA

IQ Quiescent Current ON VS = 5V, VIN = 5V (Note 3) 95 125 µA

IQ Quiescent Current ON VS = 12V, VIN = 5V (Note 3) 180 400 µA

VINH Input High Voltage ● 2.0 V

VINL Input Low Voltage ● 0.8 V

IIN Input Current 0V < VIN < VS ● ±1.0 µA

CIN Input Capacitance 5pF

VSEN Drain Sense Threshold 80 100 120 mV Voltage ● 75 100 125 mV

ISEN Drain Sense Input Current 0V < VSEN < VS ● ±0.1 µA

VGATE – VS Gate Voltage Above Supply VS = 5V ● 6.0 7.0 9.0 V VS = 6V ● 7.5 8.3 15.0 V VS = 12V ● 15 18 25 V tON Turn-ON Time VS = 5V, CGATE = 1000pF Time for VGATE > VS + 2V 50 250 750 µs Time for VGATE > VS + 5V 200 1100 2000 µs VS = 12V, CGATE = 1000pF Time for VGATE > VS + 5V 50 180 500 µs Time for VGATE > VS + 10V 120 450 1200 µs 2 LTC1156

ELECTRICAL CHARA C TERISTICS VS = 4.5V to 18V, TA = 25°C, unless otherwise noted.

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS tOFF Turn-OFF Time VS = 5V, CGATE = 1000pF Time for VGATE < 1V 10 36 60 µs VS = 12V, CGATE = 1000pF Time for VGATE < 1V 10 26 60 µs tSC Short Circuit Turn-OFF Time VS = 5V, CGATE = 1000pF Time for VGATE < 1V 5 16 30 µs VS = 12V, CGATE = 1000pF Time for VGATE < 1V 5 16 30 µs

The ● denotes specifications which apply over the full operating Note 2: Quiescent current OFF is for all channels in OFF condition. temperature range. Note 3: Quiescent current ON is per driver and is measured independently. Note 1: Both VS pins (3 and 8) must be connected together, and both ground pins (1 and 6) must be connected together.

TYPICALPERFOR ACUW ECCHARA TERISTICS

Standby Supply Current Supply Current per Channel ON High Side Gate Voltage 100 1000 24 V = V = V = V = 0V ONE INPUT = ON 90 IN1 IN2 IN3 IN4 900 22 TJ = 25°C OTHER INPUTS = OFF 80 800 TJ = 25°C 20 A) A) µ 70 µ 700 18

60 600 (V) 16 S 50 500 14 – V 40 400

GATE 12 V 30 300 10 SUPPLY CURRENT ( SUPPLY CURRENT ( 20 200 8 10 100 6 0 0 4 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V)

LTC1156 G01 1156 G02 LTC1156 G03

Standby Supply Current Supply Current per Channel ON Low Side Gate Voltage 100 1000 30 VIN1 = VIN2 = VIN3 = VIN4 = 0V ONE INPUT = ON 90 900 OTHER INPUTS = OFF 27 80 800 24 A) A) µ 70 µ 700 21

60 600 18 (V) 50 500 15 GATE 40 400 V 12 V = 18V 30 S 300 VS = 18V 9 SUPPLY CURRENT ( SUPPLY CURRENT ( 20 200 6 V = 5V 10 S VS = 5V 100 3 0 0 0 –50 25 0 25 50 75 100 125 –50 25 0 25 50 75 100 125 0 2 4 6 8 10 TEMPERATURE (°C) TEMPERATURE (°C) SUPPLY VOLTAGE (V)

1156 G04 1156 G05 1158 G06 3 LTC1156

TYPICALPERFOR ACUW ECCHARA TERISTICS

Turn-ON Time Turn-OFF Time Short Circuit Turn-OFF Delay Time 1000 50 50 C = 1000pF C = 1000pF C = 1000pF 900 GATE 45 GATE 45 GATE TIME FOR VGATE < 1V TIME FOR VGATE < 1V 800 40 40 VSEN = VS – 1V NO EXTERNAL DELAY s) s) s) 700 35 35 µ µ µ 600 30 30 500 25 25 VGS = 5V 400 20 20 TURN-ON TIME ( TURN-OFF TIME ( 300 TURN-OFF TIME ( 15 15 200 10 10 100 VGS = 2V 5 5 0 0 0 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V)

1156 G07 1156 G08 1156 G09

BLOCKDAGRAI W

VS ANALOG SECTION DRAIN SENSE

100mV 10µs REFERENCE COMP DELAY LOW STANDBY CURRENT REGULATOR

GATE CHARGE AND DISCHARGE GATE ANALOG DIGITAL CONTROL LOGIC

R INPUT LATCH TTL-TO-CMOS VOLTAGE ONE IN OSCILLATOR CONVERTER REGULATORS SHOT S FAST/SLOW AND CHARGE GATE CHARGE PUMP LOGIC

GND 1156 BD

OPERATIO U The LTC1156 contains four independent power MOSFET TTL and CMOS Compatible Inputs gate drivers and protection circuits (refer to the Block Each driver input has been designed to accommodate a Diagram for detail). Each section of LTC1156 consists of wide range of logic families. The input threshold is set at the following functional blocks: 1.3V with approximately 100mV of hysteresis.

4 LTC1156

OPERATIO U A voltage regulator with low standby current provides Drain Current Sense continuous bias for the TTL to CMOS converters. The TTL The LTC1156 is configured to sense the drain current of to CMOS converter output enables the rest of the circuitry. the power MOSFET in high side applications. An internal In this way the power consumption is kept to a minimum 100mV reference is compared to the drop across a sense in the standby mode. resistor (typically 0.002Ω to 0.1Ω) in series with the drain lead. If the drop across this resistor exceeds the internal Internal Voltage Regulation 100mV threshold, the input latch is reset and the gate is The output of the TTL to CMOS converter drives two quickly discharged by a large N-channel transistor. A regulated supplies which power the low voltage CMOS simple RC network can be added to delay the over-current logic and analog blocks. The regulator outputs are isolated protection so that large in-rush current loads such as from each other so that the noise generated by the charge lamps or capacitors can be started. pump logic is not coupled into the 100mV reference or the analog comparator. Supply and Ground Pins The two supply pins (3 and 8) of the LTC1156 must be Gate Charge Pump connected together at all times and the two ground pins (1 Gate drive for the power MOSFET is produced by an and 6) must be connected together at all times. The two adaptive charge pump circuit which generates a gate supply pins should be connected to the “top” of the drain voltage substantially higher than the power supply volt- current sense resistor/s to ensure accurate sensing. age. The charge pump capacitors are included on chip and For further applications information, see the LTC1155 therefore no external components are required to generate Dual High Side Micropower MOSFET Driver data sheet. the gate drive. U

TYPICAL APPLICATI O S 4-Cell Extremely Low Voltage Drop Regulator and Three Load Switches with Short-Circuit Protection and 20µA Standby Current

+ + 5.2V TO 6V 47µF µ **0.03Ω 4-CELL NiCd 0.1 F 3.3A MAX BATTERY PACK 100k DS2 VS VS DS1 DS3 100k DS4 G1 IRLR024 5V/2A 0.1µF SWITCHED REG ON/OFF IN1 LTC1156 IN2 G2 CONTROL G3 2 × Si9956DY LOGIC IN3 IN4 G4 FAULT 200pF GND GND

10k 1 1N4148 8 3 5V 5V 5V LT1431 7 4 LOAD LOAD LOAD

* CAPACITOR ESR LESS THAN 0.5Ω + ** RCS02 ULTRONIX (303) 242-0810 6 5 *470µF

1156 TA02 5

LTC1156 U

TYPICAL APPLICATI O S

24V to 30V Quad Industrial Switch with Thermal Shutdown

24V – 30V + µ 10 F 2k 50V

RT1* + 100°C 1µF 1N4746 VS VS 18V 25V DS1 IRF530 DS2 240k DS3 5V DS4 IRF530 LTC1156 IN1 G1 M CONTROL IN2 G2 IRF530 LOGIC OR µP IN3 G3 IN4 G4 IRF530 GND GND

* KEYSTONE RL2006-100-100-30-PT MOUNT ON HEATSINK. 1156 TA03

Automotive Triple High Side Switch with Reverse Battery Interrupt, Short-Circuit and High-Voltage Transient Protection (20µA Standby Current)

6V – 16V + 1N4148 18V 100k 0.1µF 10µF 1N4746 15V IRFZ44 1N5245A 150Ω 200k

VS VS DS1 G1

100k DS2 3 × IRFZ24 IN1 30k G2 100k 24V OUTPUT 1 INPUT 1 IN2 LTC1156 DS3 1N5252A 30k 100k G3 INPUT 2 IN3 24V OUTPUT 2 DS4 1N5252A 100k 30k INPUT 3 IN4 GND GND G4 24V 3 × 0.1µF 1N5252A OUTPUT 3 150Ω 1/2W

1156 TA04

6

LTC1156 U

TYPICAL APPLICATI O S

4-Phase Stepper Motor Driver with Short-Circuit Protection

6V + µ 0.05Ω 10µF 0.01 F 2A MAX 30k VS VS DS1 1N4001 DS2 A 5V DS3 Si9956DY DS4 1N4001 LTC1156 B IN1 G1 CONTROL IN2 G2 1N4001 LOGIC IN3 G3 C IN4 G4 Si9956DY GND GND 1N4001

D

* STR101G TECHNO (818) 781-1642 1156 TA05

Full H-Bridge Driver with Short-Circuit Protection and 16µA Standby Current Low Frequency Operation (<100Hz)

5V + µ µ 10µF 0.1 F 0.1 F 0.05Ω 0.05Ω 100k VS VS DS1 DS2 100k DS3 DS4 Si9956DY Si9956DY IN1 LTC1156 ** LOAD CONTROL IN2 G1 LOGIC IN3 G2 OR µP IN4 G3 GND GND G4

* STR101G TECHNO (818) 781-1642

** SOFTWARE (OR HARDWARE) DELAYS SHOULD BE PROVIDED TO AVOID 1156 TA06 CROSS-CONDUCTION. ALL COMPONENTS SHOWN ARE SURFACE MOUNT.

For more Typical Applications, see LTC1155 data sheet.

Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of circuits as described herein will not infringe on existing patent rights. 7 LTC1156

PACKAGE DESCRIPTIOU Dimesions in inches (millimeters) unless otherwise noted.

N Package 16-Lead Plastic DIP

0.770 (19.558) 0.300 – 0.325 0.130 ± 0.005 0.045 – 0.065 (7.620 – 8.255) (3.302 ± 0.127) (1.143 – 1.651) 16 15 14 13 12 11 10 9

0.015 (0.381) 0.260 ± 0.010 MIN 0.065 (6.604 ± 0.254) 0.009 – 0.015 (1.651) (0.229 – 0.381) TYP

+0.025 0.325 1 2 3 45678 –0.015 0.125 0.045 ± 0.015 +0.635 0.018 ± 0.003 ()8.255 (3.175) (1.143 ± 0.381) –0.381 MIN (0.457 ± 0.076) 0.100 ± 0.010 N16 1291 (2.540 ± 0.254)

S Package 16-Lead Plastic SOL

0.398 – 0.413 0.291 – 0.299 (10.109 – 10.490) (7.391 – 7.595) 0.005 (0.127) 0.093 – 0.104 0.037 – 0.045 0.010 – 0.029 16 15 14 13 12 11 10 9 RAD MIN × 45° (2.362 – 2.642) (0.940 – 1.143) (0.254 – 0.737)

0° – 8° TYP

0.050 0.394 – 0.419 0.009 – 0.013 0.004 – 0.012 SEE NOTE (1.270) (10.008 – 10.643) (0.229 – 0.330) SEE NOTE TYP (0.102 – 0.305) 0.014 – 0.019 0.016 – 0.050 (0.356 – 0.483) (0.406 – 1.270) TYP NOTE: PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS. THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS. 1 2345678

SOL16 12/91

Linear Technology Corporation LT/GP 0694 5K REV A • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7487 8 ● ● (408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977  LINEAR TECHNOLOGY CORPORATION 1994