ADP3157JR Analog Devices Inc, ADP3157JR Datasheet - Page 5

• Manufacturer Part Number: ADP3157JR
• Description: IC CNTRL SYNC PENTIUM III 16SOIC
• Manufacturer: Analog Devices Inc

Specifications of ADP3157JR

• Rohs Status: RoHS non-compliant
• Applications: Controller, Intel Pentium® III
• Voltage - Input: 12V
• Number Of Outputs: 1
• Voltage - Output: 1.3 ~ 3.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)

Figure 7. Gate Switching Waveforms
Figure 10. Load Transient Response,
1 A–19 A of Figure 2 Circuit
REV. A
1
2
Figure 4. Efficiency vs. Output
Current
100
DRIVE 1 AND 2 = 5V/DIV
95
90
85
80
75
70
65
1.4 2.8
OUTPUT CURRENT
1A TO 19A
OUTPUT VOLTAGE
20mV/DIV
V
4.2 5.6
OUTPUT CURRENT – Amps
OUT
DRIVER OUTPUT
DRIVER OUTPUT
SECONDARY
V
= 1.3V
10 s/DIV
OUT
PRIMARY
N-DRIVE
N-DRIVE
= 3.5V
7
8.4
V
OUT
SEE FIGURE 2
SEE FIGURE 2
9.8 11.2 12.6
V
OUT
= 2.0V
500ns/DIV
= 2.8V
14
Figure 5. Frequency vs. Timing
Capacitor
450
400
350
300
250
200
150
100
3
4
Figure 11. Power-On Start-Up
Waveform
50
0
Typical Performance Characteristics–
50
Figure 8. Driver Transition
Waveforms
OUTPUT VOLTAGE
V
CC
REGULATOR
100
5V/DIV
VOLTAGE
1V/DIV
200 300 400 500 600 700
TIMING CAPACITOR – pF
100ns/DIV
10ms/DIV
–5–
SEE FIGURE 2
V
V
I
OUT
CC
IN
= +5V
= +12V
= 10A
800
Figure 9. Load Transient Response,
19 A–1 A of Figure 2 Circuit
Figure 6. Supply Current vs. Oper-
ating Frequency
45
40
35
30
25
20
15
10
5
0
25
20
15
10
Figure 12. Output Accuracy
Distribution, V
45
5
0
T
SEE FIGURE 13
A
= +25 C
OPERATING FREQUENCY – kHz
OUTPUT VOLTAGE
20mV/DIV
58
OUTPUT ACCURACY – %
OUTPUT CURRENT
19A TO 1A
Q
10 s/DIV
GATE(TOTAL)
OUT
83
ADP3157
= 2.0 V
= 100nC
134
397