MC33926 Datasheet
Table Of Contents
- 5.0 A Throttle Control H-Bridge
- Figure 1. 33926 Simplified Application Diagram
- Internal Block Diagram
- Pin Connections
- Electrical Characteristics
- Table 2. Maximum Ratings
- Table 3. Static Electrical Characteristics
- Table 4. Dynamic Electrical Characteristics
- Figure 4. Output Delay Time
- Figure 5. Disable Delay Time
- Figure 6. Output Switching Time
- Figure 7. Current Limit Blanking Time and Constant-OFF Time
- Figure 8. Short-circuit Detection Turn-OFF Time tFAULT
- Figure 9. Output Current Limiting Foldback Region
- Functional Description
- Functional Internal Block Description
- Functional Device operation
- Typical applications
- Packaging
- Additional Documentation
- Table 6. Thermal Performance Comparison
- Figure 15. Surface Mount for Power PQFN with Exposed Pads
- Figure 16. Thermal Test Board
- Table 7. Thermal Resistance Performance
- Figure 17. Device on Thermal Test Board RqJA
- Figure 18. Transient Thermal Resistance RqJA, 1.0 W Step response, Device on Thermal Test Board Area A = 600 (mm2)
- Revision History
Analog Integrated Circuit Device Data
8 Freescale Semiconductor
33926
ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
POWER OUTPUTS OUT1, OUT2
Output-ON Resistance
(15)
, I
LOAD
= 3.0 A
V
PWR
= 8.0 V, T
J
=
25°C
V
PWR
= 8.0 V, T
J
=
150°C
V
PWR
= 5.0 V, T
J
=
150°C
R
DS(ON)
–
–
–
120
–
–
–
225
325
mΩ
Output Current Regulation Threshold
T
J
< T
FB
T
J
≥ T
FB
(Fold back Region - see Figure 9 and Figure 11)
(14)
I
LIM
5.2
–
6.5
4.2
8.0
–
A
High Side Short-circuit Detection Threshold (Short-circuit to GND)
(14)
I
SCH
11 13 16 A
Low Side Short-circuit Detection Threshold (Short-circuit to VPWR)
(14)
I
SCL
9.0 11 14 A
Output Leakage Current
(16)
, Outputs off, V
PWR
= 28 V
V
OUT
= V
PWR
V
OUT
= Ground
I
OUTLEAK
–
–60
–
–
100
–
μA
Output MOSFET Body Diode Forward Voltage Drop
I
OUT
= 3.0 A
V
F
– – 2.0
V
Over-temperature Shutdown
(14)
Thermal Limit @ T
J
Hysteresis @ T
J
T
LIM
T
HYS
175
–
–
12
200
–
°C
Current Foldback at T
J
(14)
T
FB
165 – 185 °C
Current Foldback to Thermal Shutdown Separation
(14)
T
SEP
10 – 15 °C
HIGH SIDE CURRENT SENSE FEEDBACK
Feedback Current (pin FB sourcing current)
(17)
I
OUT
= 0 mA
I
OUT
= 300 mA
I
OUT
= 500 mA
I
OUT
= 1.5 A
I
OUT
= 3.0 A
I
OUT
= 6.0 A
I
FB
0.0
0.0
0.35
2.86
5.71
11.43
–
270
0.775
3.57
7.14
14.29
50
750
1.56
4.28
8.57
17.15
μA
μA
mA
mA
mA
mA
STATUS FLAG
(18)
Status Flag Leakage Current
(19)
V
SF
= 5.0 V
I
SFLEAK
– – 5.0
μA
Status Flag SET Voltage
(20)
I
SF
= 300 µA
V
SFLOW
– – 0.4
V
Notes
14. This parameter is guaranteed by design.
15. Output-ON resistance as measured from output to VPWR and from output to GND.
16. Outputs switched OFF via D1 or D2.
17. Accuracy is better than 20% from 0.5 to 6.0 A. Recommended terminating resistor value: R
FB
= 270 Ω.
18. Status Flag output is an open drain output requiring a pull-up resistor to logic V
DD
.
19. Status Flag Leakage Current is measured with Status Flag HIGH and not SET.
20. Status Flag Set Voltage measured with Status Flag LOW and SET with I
FS
= 300 μA. Maximum allowable sink current from this pin is
<
| 500 μA | . Maximum allowable pull-up voltage < 7.0 V.
Table 3. Static Electrical Characteristics (continued)
Characteristics noted under conditions 8.0 V ≤ V
PWR
≤ 28 V, - 40°C ≤ T
A
≤ 125°C, GND = 0 V unless otherwise noted. Typical
values noted reflect the approximate parameter means at T
A
= 25°C under nominal conditions unless otherwise noted.
Characteristic Symbol Min Typ Max Unit