MC33567D-3R2G

MC33567
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7
DRV1
SENSE1
SHDN1
Power Supply
DRV2
SENSE2
SHDN2
1
2
3
4
8
7
6
5
MC33567
LOAD2
SHDN2
SHDN1
LOAD1
AGP
Card
Q1
Q2
C4
100 µF
C2
100 µF
C1
100 µF
C3
100 µF
12 V
3.3 V
V
in
V
CC
Figure 7. Application Block Diagram
Parts List
Qty Reference Part/Description Vendor Notes
4 C1, C2, C3, C4 100 µF Electrolytic Capacitor Various
1 U1 MC33567 ON Semiconductor
2 Q1, Q2 MTD3055VL ON Semiconductor N−Channel MOSFET
MC33567
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8
MC33567 TYPICAL CHARACTERISTICS
Figure 8. Gain−Phase Plot for Output Capacitor
with 50 m ESR
f, FREQUENCY (Hz)
200
100
0
1,000,0001,00010010
Figure 9. Gain−Phase Plot for Output Capacitor
with 200 m ESR
−100
100,00010,000
f, FREQUENCY (Hz)
200
100
0
1,000,0001,00010010
−100
100,00010,000
PHASE °
GAIN dB
PHASE °
GAIN dB
I
LOAD
= 2 A
C = 200 F
R
ESR
= 200 m
PHASE MARGIN
= 85° @ 8 kHz
PHASE MARGIN
= 48° @ 500 kHz
I
LOAD
= 2 A
C = 200 F
R
ESR
= 50 m
PHASE MARGIN
= 48° @ 8 kHz
PHASE MARGIN
= 60° @ 200 kHz
GAIN/PHASE (dB/°)
GAIN/PHASE (dB/0°)
1.530
1.520
1.535
1.515
1.525
1.510
1.540
−10
1.820
1.835
30
1.815
1.830
402010 50
T
A,
TEMPERATURE (°C)
V
OUT1
, REGULATOR 1 OUTPUT VOLTAGE (V)
1.810
1.825
1.805
0
T
A,
TEMPERATURE (°C)
Figure 10. Regulator 1 (Suffix 1)
Output Voltage vs. Ambient Temperature
Figure 11. Regulator 2 (Suffix 1)
Output Voltage vs. Ambient Temperature
1.840
60 −10 30 402010 50090
I
L
= 5 mA
I
L
= 1.3 A
1.800
1.795
1.790
1.505
1.500
1.495
60 70 8070 80 90
Gate Drive 2 Open
V
OUT2
, REGULATOR 2 OUTPUT VOLTAGE (V)
Gate Drive 2 Open
I
L
= 5 mA
I
L
= 1.3 A
1.490
MC33567
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9
−10 3020100405060
V
OUT1
, REGULATOR 1 OUTPUT VOLTAGE (V)
T
A,
TEMPERATURE (°C) T
A,
TEMPERATURE (°C)
V
OUT2
, REGULATOR 2 OUTPUT VOLTAGE (V)
70 80 90 −10 3020100405060708090
−10
1.40
1.35
1.30
1.25
302010
1.20
1.15
1.10
0405060
Figure 12. Short Circuit/Undervoltage Detect
Threshold (Suffix 1) vs. Ambient Temperature
T
A,
TEMPERATURE (°C)
Figure 13. Short Circuit/Undervoltage Detect
Threshold (Suffix 3) vs. Ambient Temperature
T
A,
TEMPERATURE (°C)
70 80 90 −10 3020100 405060708090
Figure 14. Regulator 1 (Suffix 3)
Output Voltage vs. Ambient Temperature
Figure 15. Regulator 2 (Suffix 3)
Output Voltage vs. Ambient Temperature
1.9
1.7
1.5
1.3
1.1
0.9
0.7
I
q
, QUIESCENT CURRENT (mA)
6.1
5.9
6.2
5.8
6.0
5.7
6.3
6.4
5.6
5.5
5.4
7.6
8.0
7.2
6.8
6.4
Figure 16. Gate Drive Sink Current
vs. Ambient Temperature
T
A,
TEMPERATURE (°C)
Figure 17. Quiescent Current
vs. Ambient Temperature
T
A,
TEMPERATURE (°C)
I
SINK
, GATE DRIVE SINK CURRENT (mA)
−10 3020100 40 50 90 −10 30 402010 50090
Quiescent Current with both SHDNs High
Regulator 2
6.0
5.6
60 70 80
Regulator 1
8060 70
Quiescent Current with both SHDNs Low
I
L
= 50 mA
SC
UVD
, SHORT CIRCUIT/UNDERVOLTAGE
DETECT THRESHOLD (V)
SC
UVD
, SHORT CIRCUIT/UNDERVOLTAGE
DETECT THRESHOLD (V)
2.310
2.300
2.315
2.295
2.305
2.290
2.320
2.285
2.280
2.275
Gate Drive 2 Open
I
L
= 5 mA
I
L
= 1.3 A
2.270
1.210
1.200
1.215
1.195
1.205
1.190
1.200
1.185
1.180
1.175
Gate Drive 2 Open
I
L
= 5 mA
I
L
= 1.3 A
1.170
Regulator 1
Regulator 2
Regulator 1
Regulator 2

MC33567D-3R2G

Mfr. #:
Manufacturer:
ON Semiconductor
Description:
LDO Voltage Controllers Dual 2.5V Output w/Shutdown
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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