High-side Power Switch ICs
[Surface-mount 2-circuit, current monitor output function]
SPF5017
Features
Internal current sense resistor
High accuracy current monitor output (sample & hold function)
Built-in overcurrent and thermal protection circuits
External Dimensions
(unit: mm)
14.74
±0.2
13.04
±0.2
20
11
1.0
–0.05
Fin
thickness
+0.1
Parameter
Power supply voltage 1
Power supply voltage 2
Power supply voltage 3
Current sensing voltage
Output terminal voltage
Input terminal voltage
Output current
Power dissipation
Storage temperature
Channel temperature
Symbol
V
B
Vcc
V
B
Vsense+
Vsense–
V
OUT
V
PWM
V
Hold
I
OUT
P
D
Tstg
Tch
Ratings
0 to 32
–0.5 to 7.0
0 to 40
–0.8 to 6
Vsense+
±Io
• Rsense
–2 to 32
–0.5 to 7.0
2.0
2.4 to 5.0
–40 to +150
150
Unit
V
V
V
V
V
V
A
W
°C
°C
Conditions
1
1.27
±0.25
V
B
terminal, t = 1 min
+0.15
0.4
–0.05
10
2.5
±0.2
0.25
–0.05
+0.15
a) Part No.
b) Lot No.
Block Diagram (for one channel)
Depends on surface-mount board pattern
1
Vcc
SFP5017
V
B
17
clamp
OSC
Charge
Pump
TSD
OCP
Sense
MOS
D
S
2.0
±0.2
19
CMOS Logic
Absolute Maximum Ratings
(Ta=25ºC)
b
Electrical Characteristics
Parameter
Min. operating power supply voltage
Operating power supply voltage 1
Operating power supply voltage 2
Quiescent circuit current 1
Quiescent circuit current 2
PWM terminal input voltage
PWM terminal input current
Hold terminal input voltage
Hold terminal input current
Output ON resistance
OUT
Sense+
(V
B
=14V, Ta=25ºC unless otherwise specified) – One circuit equivalent
PWM
2
70kΩ
Symbol
V
B
min
V
B
V
CC
Iqvb
Iqvcc
V
PWM
H
V
PWM
L
I
PWM
H
V
Hold
H
V
Hold
L
I
Hold
H
R
DSon
Ratings
min
6
10
14
5.0
7.2
0.2
3.5
16
typ
max
Unit
V
V
V
mA
mA
V
Conditions
Hold
3
18
lamp
+
Sense
R
Minimum operation of OUT terminal.
70kΩ
20
Sense–
*
1
*
2
Vcc = 5V, V
PWM
= 0V, One circuit equivalent
Vcc = 5V, V
PWM
= 0V
Vcc = 5V
Vcc = 5V, V
PWM
= 5V, Active H
Vcc = 5V
Vcc = 5V, V
PWM
= 5V, Active H
*
3
I
OUT
= 1A
I
OUT
= 1A, Ta = 125°C
I
OUT
= 1A
I
OUT
= 1A, Ta = 125°C
S/H
5
S/H
4
6
C
LG
1.5
70
3.5
V
1.5
70
110
0.14
0.21
0.21
µA
A
°C
1.2
0.2
A
V
V
V
V
mA
mA
15
15
100
50
500
650
1
2
70
µs
µs
µs
µs
µs
µs
µs
µs
µs
Io = 0.5A, Vcc = 5V,
C1 = 0.033µF
V
B
= 11V, Vcc = 5V, Io = 1.2A,
C1 = 0.033µF
V
B
= 11V, Vcc = 5V, Io = 1.2A,
C1 = 0.033µF, Ta = 125°C
Io = 0.5A, Vcc = 5V
110
µA
Standard Connection Diagram
*
3
1
V
CC
V
B
17
Controlling
microcomputer
CPU
2
3
1kΩ
0.01
µF
PWM
Hold
S/H
SFP5017
OUT
Sense
+
Sense
19
18
20
D
1
5
5.1
kΩ
Current sensing resistance
Overcurrent protection starting current
Thermal shutdown operating temperature
Operation circuit for current monitor output
Rsense
0.25
Is
Ttsd
Io
3.0
150
0.2
C
4
C
1
LG
6
D
2
*
4
*
1
Io = 0A, Vcc = 5V
Io = 0.2A, Vcc = 5V
Io = 0.5A, Vcc = 5V, Ta = –40 to 140°C
Io = 1.2A, Vcc = 5V, Ta = –40 to 140°C
Io = 1A, Vcc = 5V, V
SH
= 0V
Io = 1A, Vcc = 5V, V
SH
= 5V
V
PWM
* Use a Schottky Di for D2 when the Sense
+
terminal
is lower than the abs. max. rated voltage (–0.8V)
Current monitor output voltage
V
SH
0.488
1.219
2.925
0.500
1.250
3.000
0.512
1.281
3.075
5
Timing Chart
Ordinary operation
(auto hold)
Thermal
protection
Ordinary operation
(external hold)
Overcurrent
protection
Ordinary operation
(auto hold)
Current monitor output current
I
SH
–6
t
on
t
off
Output transfer time
Output rise time
Output fall time
Current monitor output hold time
Current monitor output delay time
Hold time after inputting hold
Vout
t
r
t
f
t
sh
t
shd
t
shh
Icoil
VS/H
*
1
500 to 650
usec
*
1
500 to 650
usec
*
2
VHold
Truth table
V
PWM
V
OUT
L
L
H
H
S/H settling time
t
stt
80
Note:
*
1: Accuracy warranty range for current monitor output
*
2: Equivalent errors are not included in current monitor output accuracy.
*
3: With built-in pull-down resistance (70kΩ typ)
*
4: Self-excitation and oscillation type
*
5: Accuracy of current monitor output is affected by the materials of the hold capacitor (C1).
The capacitor C1 must be of low dielectric absorption and have good bias and leak current characteristics.
46
10.5
±0.3
7.5
±0.2
a
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