MC33984CHFKR2 Freescale Semiconductor, MC33984CHFKR2 Datasheet - Page 31

• Manufacturer Part Number: MC33984CHFKR2
• Description: Power Switch ICs - Power Distribution Dual 4mOhms smart
• Manufacturer: Freescale Semiconductor

Specifications of MC33984CHFKR2

• Rohs: yes
• On Resistance (max): 4 mOhms
• On Time (max): 100 us
• Off Time (max): 500 us
• Operating Supply Voltage: 6 V to 27 V
• Maximum Operating Temperature: + 125 C
• Package / Case: PQFN-16
• Minimum Operating Temperature: - 40 C

previous listed contributors in comparison to the minimum
and maximum specified values.
corresponding to the worst case.
tolerance without battery variation effect.
Analog Integrated Circuit Device Data
Freescale Semiconductor
Figure 12
Lower VPWR Voltage causes more error. 9.0 V
24000
23000
22000
21000
20000
19000
18000
17000
16000
24000
23000
22000
21000
20000
19000
18000
17000
16000
Figure 12. CSR0 Ratio Deviation in Function All
Figure 13. CSR0 Ratio Deviation in Function
Current Recopy at Vbat=9V from -40°C to 125°C
Current Recopy at Vbat=9V/16V from -40°C to
10
10
Min(Data_16V) at 6 sigmas
shows the CSR0 tolerance in function to 3
Max(Data_16V) at 6 sigmas
Manufacturing and Temperature
Contributors
15
15
Output current (A)
Output current (A)
10%
125°C
Figure 13
Max(Data_9V) at 6 sigmas
Min(Data_9V) at 6 sigmas
20
20
shows the CSR0
Average (Data)
Spec_max
Spec_min
25
25
described in
tolerance will be about 8.5% versus 10% when all
contributors are considered.
PART CALIBRATION
be removed.
(below 5.0 A). The relative CSR0 deviation based on only
one calibration point per output (5.0 A, VPWR=16 V at 25°C)
has been performed on 3 production lots. Those parts have
tested at initial and after High Temperature Operating Life
test in order to take into account the ageing of devices.
Table 19. CSR0 Precision for Several Output Current
The main contributor is the manufacturing deviation, as
With a calibration strategy, the part to part contribution can
An experiment was done on low output current values
Table 19
24000
23000
22000
21000
20000
19000
18000
17000
16000
CSR0 ratio
Figure 14. CSR0 Ratio Deviation in Function
0.5 A
1.0 A
2.5 A
5.0 A
10
summaries test results covering 99.74% of parts.
Figure
Values with One Calibration Point at 5.0 A
Current Recopy at Vbat=9V at 25°C
14. At 15 A of output current, the
Manufacturing
15
Output current (A)
OUTPUT CURRENT MONITORING
-8.0%
-5.0%
-25%
-12%
8.5%
Min
TYPICAL APPLICATIONS
Max(Data) at 6 sigmas
20
Min(Data) at 6 sigmas
Average (Data)
8.0%
5.0%
25%
12%
Max
Spec_max
Spec_min
33984
25
31