POWER MANAGEMENT
Description
The SC1302A/B/C family are low cost dual low-side MOSFET
drivers. These drivers accept TTL-compatible inputs and
are capable of supplying high current outputs (> 2A peak)
to external MOSFET’s. Fast switching allows operation up
to 1 MHz. The SC1302A/B/C is available in three
configurations: dual non-inverting, dual inverting and one
inverting plus one non-inverting output.
An under-voltage-lock-out circuit guarantees that the driver
outputs are low when Vcc is less than 4.5V (typ). An
internal temperature sensor shuts down the driver in the
event of over temperature. The 8-pin MSOP or SOIC pack-
age uses minimum space.
Dual High Speed Low-Side
MOSFET Driver
PRELIMINARY
Features
u
+4.5V to +16.5V operation
u
Fast rise and fall times (20ns typical with 1000pf
load)
u
Dual MOSFET driver
u
2A peak drive current
u
40ns propagation delay
u
8-pin MSOP/SOIC packages
u
Enable/disable control
u
TTL-compatible input
u
Under voltage lockout with hysterisis
u
Low shutdown supply current
u
Over temperature protection
u
ESD protection
u
Dual inverting/non-inverting and inverting/non-invert-
ing configurations
SC1302A/B/C
Applications
u
Switch-mode power supplies
u
Battery powered applications
u
Solenoid and motor drives
Typical Application Circuit
+12V
V load
10uF
0.1uF
Load A
SC1302A
6
VCC
Load B
InputA
2
1
8
INA
O U TA
EN
S H D N O U TB
INB
GND
3
7
5
InputB
4
Preliminary, June 24, 2002
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SC1302A/B/C
POWER MANAGEMENT
Absolute Maximum Ratings
Parameter
Supply Voltage
Operating Supply Voltage
Input Voltages
Peak O utput Currents
Enable Voltage
Shutdown Voltage
Continuous Power Dissipation
Operating Temperature Range
Thermal Resistance Junction to Ambient (MSOP)
Thermal Resistance Junction to Ambient (SO IC)
Storage Temperature Range
Lead Temperature (Soldering)10 sec
Symbol
V
CC
V
CC
V
INA,
V
INB
I
OUTA,
I
OUTB
V
EN
V
SHDN
Pd
T
A
θ
JA
θ
JA
T
STG
T
LEAD
Typ
-0.3 to 20
-0.3 to 16.5
-0.3 to V
CC
3
-0.3 to V
CC
-0.3 to V
CC
Internally limited
-40 to +85
206
165
-65 to +150
260
PRELIMINARY
Units
V
V
V
A
V
V
W
°C
°C/W
°C/W
°C
°C
DC Electrical Characteristics
Unless otherwise specified: T
A
= 25°C, V
CC
= 12V, V
IN
= 5V, V
EN
= 5V, V
SHDN
= 5V
Parameter
Supply Current
Q uiescent Current
Q uiescent Current
Q uiescent Current
Under-Voltage Lockout
Threshold Voltage
Hysteresis
Enable
Enable Voltage
Disable Voltage
Delay to O utput
Delay to O utput
Enable Input Current
Input
High Level Input Voltage
Low Level Input Voltage
Input Current
Symbol
Conditions
M in
Typ
Max
Units
I
Q
I
Q
I
Q
V
CC
< V
START
V
EN
=V
SHDN
=V
INA
=V
INB
= 3V
V
SHDN
=0V
1.5
7.5
6
mA
mA
µA
V
START
V
SHDN
=V
EN
=V
INA
=V
INB
= 3V
V
SHDN
=V
EN
=V
INA
=V
INB
= 3V
4.5
320
V
mV
V
EN
V
EN
t
D_EN
t
D_DIS
I
EN
0 < V
EN
< V
CC
0 < V
EN
< V
CC
EN from low to high
EN from high to low
0 < V
EN
< V
CC
2.0
0.8
70
55
14
V
V
ns
ns
µA
V
IH
V
IL
I
IN
0 < V
IN
< V
CC
0 < V
IN
< V
CC
0 < V
IN
< V
CC
Non-Inverting Input(s) of SC1302A/C
0 < V
IN
< V
CC
Inverting Input(s) of SC1302B/C
2.0
0.8
16
-7
V
V
µA
µA
©
2002 Semtech Corp.
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SC1302A/B/C
POWER MANAGEMENT
DC Electrical Characteristics (Cont.)
Unless otherwise specified: T
A
= 25°C, V
CC
= 12V, V
IN
= 5V, V
EN
= 5V
PRELIMINARY
Parameter
Output
Output Peak Current
Symbol
Conditions
Min
Typ
Max
Units
I
PK_SOURCE
I
PK_SINK
V
OUT
= 0.5V, t
PW
< 10uS
V
OUT
= V
CC
- 0.5V, t
PW
< 10uS
1600
1600
mA
mA
Shutdown
SHDN Input Voltage High
SHDN Input Voltage Low
SHDN Pin Current
Thermal Shutdown
Over Temperature Trip Point
Hysteresis
T
J_OT
150
10
°C
°C
V
SHDN
V
SHDN
I
SHDN
V
SHDN
= 5V
30
2
0.3
V
V
µA
AC Electrical Characteristics
Unless otherwise specified: T
A
= 25°C, V
CC
= 12V, V
EN
= 5V, C
L
= 1000pF
Parameter
Rise time
Fall time
Propagation delay time
Propagation delay time
Symbol
t
R
t
F
t
D1
t
D2
Conditions
See Timing Diagram
See Timing Diagram
See Timing Diagram
See Timing Diagram
Min
Typ
20
20
53
41
Max
Units
ns
ns
ns
ns
Timing Diagrams
5V
90%
Input
0V
10%
t
R
t
F
90%
10%
90%
10%
N o n -i n v e r t i n g
O u tp u t
SC1302A
I n v e r tin g
O u tp u t
SC1302B
90%
t
F
t
R
90%
10%
10%
t
D2
t
D 1
©
2002 Semtech Corp.
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SC1302A/B/C
POWER MANAGEMENT
Pin Configuration
Top View
SC1302A (Dual Non-Inverting)
EN
INA
GND
INB
1
2
3
4
8
7
6
5
SHDN
OUTA
VCC
OUTB
PRELIMINARY
Ordering Information
Part Number
SC1302AIMSTR
SC1302BIMSTR
SC1302CIMSTR
SC1302AISTR
SC1302BISTR
SC1302CISTR
SOIC-8
-40°C to +85°C
MSOP-8
Package
Temp. Range (T
A
)
-40°C to +85°C
(8-Pin MSOP or SOIC)
Note:
(1) Only available in tape and reel packaging. A reel contains 2500 devices.
Top View
SC1302B (Dual Inverting)
EN
INA
GND
INB
1
2
3
4
8
7
6
5
Top View
SC1302C (Inverting + Non-Inverting)
SHDN
OUTA
VCC
OUTB
EN
INA
GND
INB
1
2
3
4
8
7
6
5
SHDN
OUTA
VCC
OUTB
(8-Pin MSOP or SOIC)
(8-Pin MSOP or SOIC)
Pin Descriptions
Pin #
1
2
3
4
5
6
7
8
SC1302A
EN
INA
GND
INB
OUTB
VCC
OUTA
SHDN
SC1302B
EN
INA
GND
INB
OUTB
VCC
OUTA
SHDN
SC1302C
EN
INA
GND
INB
OUTB
VCC
OUTA
SHDN
Pin Function
Enable/disable control. When the EN is driven low, both outputs are low. When left open,
both outputs are low. Enable both drivers by tying EN pin to a voltage greater than 2V.
TTL-compatible input to the driver A. When left open, Pin 7 is low.
Ground.
TTL-compatible input to the driver B. When left open, Pin 5 is low.
Output gate drive B for external MOSFET.
Supply: +4.5V to +16.5V supply. During UVLO, the outputs are held low.
Output gate drive A for external MOSFET.
Shutdown pin. Apply a voltage from 2V to VCC to enable device. Pull below 0.3V for low-
power shut down.
©
2002 Semtech Corp.
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SC1302A/B/C
POWER MANAGEMENT
Block Diagrams
EN
VCC
EN
PRELIMINARY
VCC
INA
BIAS
PRE -
DRIVER
OUTA
INA
BIAS
PRE -
DRIVER
OUTA
SHDN
BANDGAP
SHDN
BANDGAP
BIAS
INB
PRE -
DRIVER
BIAS
OUTB
INB
PRE -
DRIVER
OUTB
SC1302A
GND
SC1302B
GND
EN
VCC
INA
BIAS
PRE -
DRIVER
OUTA
SHDN
BANDGAP
BIAS
INB
PRE -
DRIVER
OUTB
GND
SC1302C
©
2002 Semtech Corp.
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