OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

MC34025DWR2G

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
MC34025, MC33025
http://onsemi.com
4
Gain
Phase
1
C
T
=
1. 100 nF
2. 47 nF
3. 22 nF
4. 10 nF
5. 4.7 nF
6. 2.2 nF
7. 1.0 nF
8. 470 pF
9. 220 pF
2
3
4
5
6
7
8
9
-55 -25 0 25 75 100 125
A
VOL
, OPEN LOOP VOLTAGE GAIN (dB)
, OSCILLATOR FREQUENCY (kHz)f
osc
Figure 2. Timing Resistor versus
Oscillator Frequency
, TIMING RESISTOR ( )
100 1000 10
4
10
5
10
6
10
7
f
osc
, OSCILLATOR FREQUENCY (Hz)
Figure 3. Oscillator Frequency versus Temperature
T
A
, AMBIENT TEMPERATURE (°C)
Figure 4. Error Amp Open Loop Gain and
Phase versus Frequency
10 100 1.0 k 10 k 100 k 1.0 M 10 M
f, FREQUENCY (Hz)
Figure 5. PWM Comparator Zero Duty Cycle
Threshold Voltage versus Temperature
-55 -25 0 25 50 75 100
T
A
, AMBIENT TEMPERATURE (°C)
Figure 6. Error Amp Small Signal
Transient Response
Figure 7. Error Amp Large Signal
Transient Response
R
T
Ω
125
0
45
90
135
, EXCESS PHASE (°C)
θ
V
th
, ZERO DUTY CYCLE (V)
0.1 ms/DIV 0.1 ms/DIV
V
CC
= 15 V
R
T
= 3.6 k
C
T
= 1.0 nF
R
T
= 1.2 k
C
T
= 1.0 nF
R
T
= 36 k
C
T
= 1.0 nF
50
50 kHz
400 kHz
1.0 MHz
V
CC
= 15 V
Pin 7(9) = 0 V
V
CC
= 15 V
T
A
= + 25°C
1.3
1.28
1.26
1.24
1.22
1.2
100 k
10 k
1.0 k
470
1200
1000
800
600
400
200
120
100
80
60
40
20
0
0
-20
2.55 V
2.5 V
2.45 V
3.0 V
2.5 V
2.0 V
MC34025, MC33025
http://onsemi.com
5
(CL), CURRENT LIMIT THRESHOLD CHANGE (mV)V
th
, SHUTDOWN THRESHOLD VOLTAGE (V)V
th
V
CC
= 15 V
0
10 20 30 40 50
T
A
, AMBIENT TEMPERATURE (°C)
, REFERENCE SHORT CIRCUIT CURRENT (mA)
Figure 8. Reference Voltage Change
versus Source Current
, REFERENCE VOLTAGE CHANGE (mV)
I
Source
, SOURCE CURRENT (mA)
Figure 9. Reference Short Circuit Current
versus Temperature
-55
T
A
, AMBIENT TEMPERATURE (°C)
- 25 0 25 50 75 100 125
Figure 10. Reference Line Regulation Figure 11. Reference Load Regulation
Figure 12. Current Limit Comparator Threshold
Change versus Temperature
T
A
, AMBIENT TEMPERATURE (°C)
Figure 13. Shutdown Comparator Threshold
Voltage versus Temperature
-55 -25 25 50 75 100 12
5
- 50 - 25 0 25 50 75 125
V
ref
I
SC
100 0
T
A
= + 25°C
T
A
= - 55°C
V
ref
LINE REGULATION 10 V - 24 V
2.0 ms/DIV
2.0 mV/DIV
V
ref
LINE REGULATION 1.0 mA - 10 mA
2.0 ms/DIV
2.0 mV/DIV
T
A
= +125°C
Δ
V
CC
= 15 V
V
CC
= 15 V
1.42
4.0
2.0
- 4.0
- 8.0
-10
-12
0
-5.0
-10
-15
-20
-25
-30
66
65.6
65.2
64.8
64.4
64
1.50
1.46
1.38
1.34
1.30
0
- 2.0
- 6.0
MC34025, MC33025
http://onsemi.com
6
Source Saturation
(Load to Ground)
V
CC
= 15 V
80 ms Pulsed Load
120 Hz Rate
T
A
= + 25°C
V
CC
Ground
Sink Saturation
(Load to V
CC
)
V
CC
Decreasing
V
CC
Increasing
V
CC
= 15 V
T
A
, AMBIENT TEMPERATURE (°C)
, OUTPUT SATURATION VOLTAGE (V)
Figure 14. Soft−Start Charge Current
versus Temperature
A)
-55 -25 0 25 50 75 100 125
I
O
, OUTPUT LOAD CURRENT (A)
Figure 15. Output Saturation Voltage
versus Load Current
0 0.2 0.4 0.6 0.8 1.0
Figure 16. Drive Output Rise and Fall Time Figure 17. Drive Output Rise and Fall Time
V
CC
, SUPPLY VOLTAGE (V)
0 4.0 8.0 12 16 20
, SUPPLY CURRENT (mA)
μI
chg
, SOFT‐START CHARGE CURRENT (
V
sat
I
CC
Figure 18. Supply Voltage versus Supply Current
OUTPUT RISE & FALL TIME 1.0 nF LOAD
50 ns/DIV
OUTPUT RISE & FALL TIME 10.0 nF LOAD
50 ns/DIV
R
T
= 3.65 kW
C
T
= 1.0 nF
0
2.0
1.0
10
9.5
9.0
8.5
8.0
7.5
7.0
-1.0
-2.0
0
30
25
20
15
10
5.0
0
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

MC34025DWR2G

Mfr. #:
Buy MC34025DWR2G
Manufacturer:
ON Semiconductor
Description:
Switching Controllers Dual Output Voltage or Current Mode PWM
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet