SPF5018 Datasheet, PDF (1/1 Pages) Sanken electric – High-side Power Switch ICs

High-side Power Switch ICs [Surface-mount, current monitor output function] SPF5018
Features
● Internal current sense resistor
● High accuracy current monitor output (sample & hold function)
● Built-in overcurrent and thermal protection circuits
External Dimensions (unit: mm)
12.2^±0.2
10.5^±0.2
16
9
+0.1
1.0 – 0.05
Fin
thickness
Absolute Maximum Ratings
(Ta=25ºC)
Parameter
Symbol
Ratings
Unit
Conditions
Power supply voltage 1
Power supply voltage 2
Power supply voltage 3
Current sensing voltage
VB
Vcc
VB
Vsense+
Vsense–
0 to 32
–0.5 to 7.0
0 to 40
–0.8 to 6
Vsense+±Io • Rsense
V
V
V
VB terminal, t = 1 min
V
1
1.27^±0.25
8
+0.15
0.4 – 0.05
+0.15
0.25–0.05
Output terminal voltage
VOUT
–2 to 32
V
Input terminal voltage
Output current
Power dissipation
Storage temperature
Channel temperature
VPWM
VHold
IOUT
PD
Tstg
Tch
–0.5 to 7.0
2.0
2.0
–40 to +150
150
V
A
W
Depends on surface-mount board pattern
°C
°C
Electrical Characteristics
Parameter
Symbol
min
Min. operating power supply voltage VB min
6
Operating power supply voltage 1 VB
10
Operating power supply voltage 2 VCC
Quiescent circuit current 1
Iqvb
Ratings
typ
14
5.0
(VB=14V, Ta=25ºC unless otherwise specified)
max
16
7.2
Unit
Conditions
V
Minimum operation of OUT terminal.
V
*¹
V
*²
mA
Vcc = 5V, VPWM = 0V
Block Diagram (for one channel)
Vcc
2
VB
11
PWM
3
Hold
4
S/H
6
OSC
70kΩ
70kΩ
Charge
Pump
TSD OCP
CMOS Logic
S/H
clamp
Sense
MOS
lamp +
–
D
S
OUT
14
Sense+
13
Sense
R
15
Sense–
5
7
C
LG
Quiescent circuit current 2
Iqvcc
0.2
mA
Vcc = 5V, VPWM = 0V
VPWMH
3.5
PWM terminal input voltage
VPWML
PWM terminal input current
IPWMH
Hold terminal input voltage
VHoldH
3.5
VHoldL
Hold terminal input current
IHoldH
Output ON resistance
RDSon
Current sensing resistance
Rsense
Overcurrent protection starting current
Is
3.0
V
Vcc = 5V
1.5
Standard Connection Diagram
70
110
µA
Vcc = 5V, VPWM = 5V, Active H * ³
V
Vcc = 5V
1.5
2
VCC
11
VB
70
110
µA
Vcc = 5V, VPWM = 5V, Active H * ³
0.14
Ω
IOUT = 1A
0.21
Ω
IOUT = 1A, Ta = 125°C
0.21
Ω
IOUT = 1A
0.25
Ω
IOUT = 1A, Ta = 125°C
A
*⁴
Controlling
microcomputer
CPU
3
PWM
4
Hold
1kΩ
6
S/H
5.1
0.01
µF
kΩ
SFP5018
C
LG
5
7
C1
14
OUT
13
Sense⁺
15
Sense^–
D1
D2
Thermal shutdown operating temperature Ttsd
150
Operation circuit for current monitor output Io
0.2
°C
1.2
A
*¹
* Use a Schottky Di for D2 when the Sense⁺ terminal
is lower than the abs. max. rated voltage (–0.8V)
0.2
V
Io = 0A, Vcc = 5V
Current monitor output voltage VSH
0.488
1.219
0.500
1.250
0.512
1.281
V
Io = 0.2A, Vcc = 5V
Timing Chart
V
Io = 0.5A, Vcc = 5V, Ta = –40 to 140°C
Current monitor output current ISH
2.925
–6
3.000
3.075
5
V
Io = 1.2A, Vcc = 5V, Ta = –40 to 140°C
mA
Io = 1A, Vcc = 5V, VSH = 0V
mA
Io = 1A, Vcc = 5V, VSH = 5V
Ordinary operation Thermal Ordinary operation
(auto hold)
protection (external hold)
VPWM
Overcurrent
protection
Ordinary operation
(auto hold)
ton
Output transfer time
toff
Output rise time
tr
Output fall time
tf
15
µs
15
µs
Io = 0.5A, Vcc = 5V
100
µs
50
µs
Vout
Icoil
VS/H
*¹ *¹
*²
Current monitor output hold time tsh
500
Current monitor output delay time tshd
Hold time after inputting hold
tshh
S/H settling time
t stt
650
µs
Io = 0.5A, Vcc = 5V,
1
µs
C1 = 0.033µF
2
µs
70
µs
VB = 11V, Vcc = 5V, Io = 1.2A,
C1= 0.033µF
80
µs
VB = 11V, Vcc = 5V, Io = 1.2A,
C1 = 0.033µF, Ta = 125°C
500 to 650 500 to 650
usec
usec
VHold
Truth table
VPWM L
H
VOUT
L
H
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.
48