L9347 Просмотр технического описания (PDF) - STMicroelectronics
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L9347 Datasheet PDF : 21 Pages
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L9347
ELECTRICAL CHARACTERISTCS: (continued)
(Vs = 4.8 to 18V; Tj = -40 to 150°C unless otherwise specified)
Symbol
Parameter
Test Condition
Min. Typ.
Additional Diagnostic Functions channel 3 and channel 4 (regulated channels)
DCOUT Output duty cycle range
IQO3,4 Overload current
channel 3,4
filtered with 10ms
VS ≥ 6.5V
10
2.5
5
Vrerr Recirculation error shutdown
threshold (open D3/D4)
Iout > 50mA
45
50
PWMdOU Output PWM ratio during drift
T
comparison
VIN3 = VIN4 = PWMIN
VTEST = H
-14.3
Digital Inputs (IN1 to IN4, ENA, CLK, TEST). The valid PWM-Ratio for IN3/IN4 is 10% to 90%
VIL Input low voltage
-0.3
VIH Input high voltage
2
VIHy Input voltage hysteresis (1)
20
II
Input pull down current
VIN = 5V, VS ≥ 6.5V
8
20
Digital Outputs (ST1 to ST4)
VSTL Status output voltage in low state (2) IST ≤ 40µA
0
VSTH Status output voltage in high state 2) IST ≥ -40µA
2.5
IST ≥ -120µA
2
RDIAGL ROUT + RDSON in low state
0.3 0.64
RDIAGH ROUT + RDSON in high state
1.5
3.2
Power Outputs (Q1 to Q4)
RDSON1,2 Static drain-source ON-resistance
Q1 and Q2
(non-reg. channels)
RDSON3,4 Static drain-source ON-resistance
Q3 and Q4
(reg. channels)
IQ = 1A; VS ≥ 9.5V
Tj = 25°C
Tj = 125°C(3)
Tj = 150°C(4)
IQ = 1A; VS ≥ 9.5V
Tj = 25°C
Tj = 125°C 3)
Tj = 150°C 4)
0.2
0.35
VF_250mA Forward voltage of free wheeling path ID3/4 = -250mA
0.5
D3, D4 @250mA
VF_2.25A Forward voltage of free wheeling path ID3/4 = -2.25A
2.0
D3, D4 @2.25A
Rsens Sense resistor = (VF_2.25A-VF_250mA)/
1
2A
Max.
90
8
60
+14.3
1
6
500
40
0.4
3.45
3.45
1.5
7.0
0.5
0.5
0.75
0.75
1.5
4.5
Unit
%
A
V
%
V
V
mV
µA
V
V
V
kΩ
kΩ
Ω
Ω
Ω
Ω
Ω
Ω
V
V
Ω
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