Linear Technology LTC1693 Datasheet

FEATURES

■

Dual MOSFET Drivers in SO-8 Package
or Single MOSFET Driver in MSOP Package

■

1GΩ Electrical Isolation Between the Dual Drivers
Permits High/Low Side Gate Drive

■

1.5A Peak Output Current

■

16ns Rise/Fall Times at VCC = 12V, CL = 1nF

■

Wide VCC Range: 4.5V to 13.2V

■

CMOS Compatible Inputs with Hysteresis,
Input Thresholds are Independent of V

■

Driver Input Can Be Driven Above V

■

Undervoltage Lockout

■

Thermal Shutdown

CC

CC

U

APPLICATIO S

■

Power Supplies

■

High/Low Side Drivers

■

Motor/Relay Control

■

Line Drivers

■

Charge Pumps

LTC1693

High Speed

Single/Dual MOSFET Drivers

U

DESCRIPTIO

The LTC®1693 family drives power MOSFETs at high
speed. The 1.5A peak output current reduces switching
losses in MOSFETs with high gate capacitance.

The LTC1693-1 contains two noninverting drivers. The
LTC1693-2 contains one noninverting and one inverting
driver. The LTC1693-1 and LTC1693-2 drivers are electri­cally isolated and independent. The LTC1693-3 is a single
driver with an output polarity select pin.

The LTC1693 has VCC independent CMOS input thresh­olds with 1.2V of typical hysteresis. The LTC1693 can
level-shift the input logic signal up or down to the rail-to­rail VCC drive for the external MOSFET.

The LTC1693 contains an undervoltage lockout circuit and
a thermal shutdown circuit. Both circuits disable the
external N-channel MOSFET gate drive when activated.

The LTC1693-1 and LTC1693-2 come in an 8-lead SO pack­age. The LTC1693-3 comes in an 8-lead MSOP package.

, LTC and LT are registered trademarks of Linear Technology Corporation.

TYPICAL APPLICATIO

V

IN

C11

0.1µF

1800pF

C10

0.1µF

C14

3300pF

NPO

48VDC

±10%

RETURN

12V

C9

5%

R9
12k

R5

2.49k
1%

C12
100pF

C5
1µF

10

1
2
4
3
5
6
7

C15

0.1µF

SYNC
5V

REF

SL/ADJ
C

T

I

AVG

SS
V

C

V

REF

12V

LT1339

8

+

MURS120

17

IN

BOOST

SENSE
SENSE

PHASE

RUN/SHDN

PGNDSGND

15

C1
330µF
63V

D2

TG

TS

+
–

BG

V

FB

20
19

18
11
12
16
14
13
9

U

R7 100Ω

C2

1.5µF
63V

BAT54

R6 100Ω

Two Transistor Foward Converter

LTC1693CS8-2

R8
301k
1%

R10
10k
1%

1

IN1

2

GND1

3

IN2

4

GND2

LTC1693CS8-2

1

IN1

2

GND1

3

IN2

4

GND2

V

OUT1

V

OUT2

V

OUT1

V

OUT2

8

CC1

7
6

CC2

5

C7

1µF

8

CC1

7
6

CC2

5

C13
1µF

C8
1µF

R1

0.068Ω

Q1
MTD20NO6HD

D1
MURS120

T1

13:2

••

D3
MURS120

Si4420

Q3

MTD20NO6HD

D4

MBRO530T1

C1: SANYO 63MV330GX
C2: WIMA SMD4036/1.5/63/20/TR
C6: KEMET T510X477M006AS (×8)
L1: GOWANDA 50-318
T1: GOWANDA 50-319

L1

1.5µH

C3
4700pF
25V

R2

5.1Ω

Q4

Si4420

Q2
×2

C4

0.1µF
C6

+

470µF

6.3V
×8

1693 TA01

R3
249Ω
1%

R4

1.24k
1%

V

OUT

1.5V/15A

RETURN

1

LTC1693

WW

W

U

ABSOLUTE MAXIMUM RATINGS

(Note 1)

Supply Voltage (VCC) .............................................. 14V

Inputs (IN, PHASE)................................... –0.3V to 14V

Driver Output................................. –0.3V to VCC + 0.3V

GND1 to GND2 (Note 5) ..................................... ±100V

U

W

U

PACKAGE/ORDER INFORMATION

TOP VIEW

IN1

IN1

1

GND1

2

IN2

3

GND2

4

S8 PACKAGE

8-LEAD PLASTIC SO

T

= 150°C, θJA = 135°C/W

JMAX

ORDER PART

NUMBER

V

8

CC1

OUT1

7

V

6

CC2

OUT2

5

S8 PART

MARKING

ORDER PART

NUMBER

1

GND1

2

IN2

3

GND2

4

8-LEAD PLASTIC SO

T

= 150°C, θJA = 135°C/W

JMAX

S8 PACKAGE

Junction Temperature.......................................... 150°C

Operating Ambient Temperature Range.......0°C to 70°C

Storage Temperature Range................. –65°C to 150 °C

Lead Temperature (Soldering, 10 sec)..................300°C

TOP VIEW

V

8

CC1

OUT1

7

V

6

CC2

OUT2

5

S8 PART

MARKING

PHASE

GND

ORDER PART

NUMBER

TOP VIEW

IN

1

NC

2
3
4

MS8 PACKAGE

8-LEAD PLASTIC MSOP

T

= 150°C, θJA = 200°C/W

JMAX

8
7
6
5

MS8 PART

MARKING

V

CC

OUT
NC
NC

LTC1693-1CS8 16931

Consult factory for Industrial and Military grade parts.

LTC1693-2CS8

ELECTRICAL CHARACTERISTICS

The ● denotes specifications which apply over the full operating

16932

LTC1693-3CMS8 LTEB

temperature range, otherwise specifications are at TA = 25°C. VCC = 12V, unless otherwise noted.

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

V

CC

I

CC

I

CC(SW)

Input

V

IH

V

IL

I

IN

V

PH

I

PH

Output

V

OH

V

OL

R

ONL

R

ONH

I

PKL

I

PKH

Supply Voltage Range 4.5 13.2 V
Quiescent Current LTC1693-1, LTC1693-2, IN1 = IN2 = 0V (Note 2) ● 400 720 1100 µA

LTC1693-3, PHASE = 12V, IN = 0V

Switching Supply Current LTC1693-1, LTC1693-2, C

LTC1693-3, C

High Input Threshold ● 2.2 2.6 3.1 V
Low Input Threshold ● 1.1 1.4 1.7 V
Input Pin Bias Current ● ±0.01 ±10 µA
PHASE Pin High Input Threshold (Note 3) ● 4.5 5.5 6.5 V
PHASE Pin Pull-Up Current PHASE = 0V (Note 3) ● 10 20 45 µA

High Output Voltage I
Low Output Voltage I
Output Pull-Down Resistance 2.85 Ω
Output Pull-Up Resistance 3.00 Ω
Output Low Peak Current 1.70 A
Output High Peak Current 1.40 A

= –10mA ● 11.92 11.97 V

OUT

= 10mA ● 30 75 mV

OUT

= 4.7nF, fIN = 100kHz ● 7.2 10 mA

OUT

= 4.7nF, fIN = 100kHz ● 14.4 20 mA

OUT

● 200 360 550 µA

2

LTC1693

ELECTRICAL CHARACTERISTICS

The ● denotes specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VCC = 12V, unless otherwise noted.

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Switching Timing (Note 4)

t

RISE

t

FALL

t

PLH

t

PHL

Output Rise Time C

Output Fall Time C

Output Low-High Propagation Delay C

Output High-Low Propagation Delay C

= 1nF ● 17.5 35 ns

OUT

C

= 4.7nF ● 48.0 85 ns

OUT

= 1nF ● 16.5 35 ns

OUT

C

= 4.7nF ● 42.0 75 ns

OUT

= 1nF ● 38.0 70 ns

OUT

= 4.7nF ● 40.0 75 ns

C

OUT

= 1nF ● 32 70 ns

OUT

= 4.7nF ● 35 75 ns

C

OUT

Driver Isolation

R

ISO

Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.

Note 2: Supply current is the total current for both drivers.

GND1-GND2 Isolation Resistance LTC1693-1, LTC1693-2 GND1-to-GND2 Voltage = 75V ● 0.075 1 GΩ

Note 4: All AC timing specificatons are guaranteed by design and are not
production tested.

Note 5: Only applies to the LTC1693-1 and LTC1693-2.

Note 3: Only the LTC1693-3 has a PHASE pin.

UW

TYPICAL PERFOR A CE CHARACTERISTICS

IN Threshold Voltage vs V

2.75
TA = 25°C

2.50

2.25

2.00

1.75

1.50

INPUT THRESHOLD VOLTAGE (V)

1.25

1.00

5

67

V

IL

810

VCC (V)

CC

V

IH

91112

1693 G01

IN Threshold Voltage
vs Temperature

3.00
VCC = 12V

2.75

2.50

2.25

2.00

1.75

1.50

INPUT THRESHOLD VOLTAGE (V)

1.25

1.00

–25 0 50

–50

25

TEMPERATURE (°C)

V

IH

V

IL

75 100 125

1693 G02

IN Threshold Hysteresis
vs Temperature

1.4
VCC = 12V

1.3

1.2

V

IH-VIL

1.1

1.0

0.9

INPUT THRESHOLD HYSTERESIS (V)

0.8

–25 0 50 100 125

–50

25 75

TEMPERATURE (°C)

1693 G03

3

LTC1693

UW

TYPICAL PERFOR A CE CHARACTERISTICS

PHASE Threshold Voltage vs V

6

TA = 25°C

5

V

4

3

2

1

PHASE THRESHOLD VOLTAGE (V)

0

5

67

Rise/Fall Time vs C

120

TA = 25°C

= 12V

V

CC

= 100kHz

f

100

IN

80

60

TIME (ns)

40

20

0

1 100 1000 10000

PH(H)

810

VCC (V)

10

(pF)

C

OUT

V

91112

OUT

t

RISE

PH(L)

t

FALL

CC

1693 G04

1693 G07

Rise/Fall Time vs V

24

22

20

18

16

TIME (ns)

14

12

10

5

67

55
50
45
40
35
30

TIME (ns)

25

20

15
10

t

PHL

6891110 12

5

CC

t

RISE

t

FALL

91112

810

VCC (V)

t

PLH

7

VCC (V)

TA = 25°C
C

OUT

= 100kHz

f

IN

CC

TA = 25°C
C

OUT

= 100kHz

f

IN

= 1nF

1693 G05

= 1nF

1693 G08

Rise/Fall Time vs Temperature

20

VCC = 12V

19

C

= 1nF

18
17
16
15

TIME (ns)

14
13
12
11
10

–50

OUT

= 100kHz

f

IN

–25

0

TEMPERATURE (°C)

t

RISE

50

25

Propagation Delay vs TemperaturePropagation Delay vs V

50

VCC = 12V

= 1nF

C

OUT

= 100kHz

45

f

IN

40

t

–50

PLH

–25 0

t

PHL

50

25 75

TEMPERATURE (°C)

35

TIME (ns)

30

25

20

t

FALL

75

125

100

1693 G06

100 125

1693 G09

Propagation Delay vs C

50

TA = 25°C

= 12V

V

CC

= 100kHz

f

IN

40

t

PLH

TIME (ns)

30

20

1 100 1000 10000

t

PHL

10

C

(pF)

OUT

4

OUT

1693 G10

Output Saturation Voltage
vs Temperature

200

VCC = 12V

150

100

50

OUTPUT SATURATION VOLTAGE (mV)

0

–55

VOH (50mA) wrt V

VOH (10mA) wrt V

VOL (10mA)

–35 –15 5 25

TEMPERATURE (°C)

CC

VOL (50mA)

CC

45 65 85 105 125

1693 G11

Quiescent Current
vs VCC (Single Driver)

350

TA = 25°C

= 0V

V

IN

300

250

200

QUIESCENT CURRENT (µA)

150

100

56

7

8

VCC (V)

9

10

11

12

1693 G12

UW

TYPICAL PERFOR A CE CHARACTERISTICS

Switching Supply Current
vs C

(Single Driver)

OUT

100

TA = 25°C

90

V

= 12V

CC

80
70
60
50
40
30
20

SWITCHING SUPPLY CURRENT (mA)

10

0

1 100 1000 10000

10

750kHz

500kHz

C

OUT

200kHz
100kHz

25kHz

(pF)

1693 G13

300

250

200

150

(mV)

OL

V

100

50

0

VOL vs Output Current

VCC = 12V

= 25°C

T

A

V

OL

20 40 60 80

OUTPUT CURRENT (mA)

LTC1693

10010030507090

1693 G14

VOH vs Output Current

350

TA = 25°C

= 12V

V

CC

300

250

200

(mV)

OH

150

V

100

50

0

0

30

20

10

OUTPUT CURRENT (mA)

40

50

60 80

Thermal Derating Curves

1400

1200

1000

V

OH

90

1693 G15

100

70

800

600

400

POWER DISSIPATION (mW)

200

LTC1693-3

0

–35 –15 5 25 45 125

–55

LTC1693-1/LTC1693-2

AMBIENT TEMPERATURE (°C)

TJ = 125°C

65 85 105

1693 G16

5

LTC1693

UUU

PIN FUNCTIONS

SO-8 Package (LTC1693-1, LTC1693-2)
IN1, IN2 (Pins 1, 3):

Driver Inputs. The inputs have V

CC

independent thresholds with 1.2V typical hysteresis to
improve noise immunity.

GND1, GND2 (Pins 2, 4): Driver Grounds. Connect to a
low impedance ground. The VCC bypass capacitor should
connect directly to this pin. The source of the external
MOSFET should also connect directly to the ground pin.
This minimizes the AC current path and improves signal
integrity. The ground pins should not be tied together if
isolation is required between the two drivers of the
LTC1693-1 and the LTC1693-2.

OUT 1, OUT2 (Pins 5, 7): Driver Outputs. The LTC1693­1’s outputs are in phase with their respective inputs (IN1,
IN2). The LTC1693-2’s topside driver output (OUT1) is in
phase with its input (IN1) and the bottom side driver’s
output (OUT2) is opposite in phase with respect to its input
pin (IN2).

V

, V

CC1

(Pins 6, 8): Power Supply Inputs.

CC2

MSOP Package (LTC1693-3)
IN (Pin 1):

Driver Input. The input has VCC independent

thresholds with hysteresis to improve noise immunity.

NC (Pins 2, 5, 6): No Connect.
PHASE (Pin 3): Output Polarity Select. Connect this pin to

VCC or leave it floating for noninverting operation. Ground
this pin for inverting operation. The typical PHASE pin
input current when pulled low is 20µA.

GND (Pin 4): Driver Ground. Connect to a low impedance
ground. The VCC bypass capacitor should connect directly
to this pin. The source of the external MOSFET should also
connect directly to the ground pin. This minimizes the AC
current path and improves signal integrity.

OUT (Pin 7): Driver Output.
VCC (Pin 8): Power Supply Input.

W

BLOCK DIAGRA SM

1

IN1

2

GND1

3

IN2

4

GND2

LTC1693-1

DUAL NONINVERTING DRIVER

8

V

CC1

7

OUT1

6

V

CC2

5

OUT2

1

IN1

2

GND1

3

IN2

4

GND2

TOPSIDE NONINVERTING DRIVER

AND BOTTOM SIDE INVERTING DRIVER

LTC1693-2

8

V

CC1

7

OUT1

6

V

CC2

5

OUT2

1

IN

4

GND

3

PHASE

2

NC

SINGLE DRIVER WITH

POLARITY SELECT

LTC1693-3

8

V

CC

7

OUT

6

NC

5

NC

1693 BD

6