IR3870MTR1PBF International Rectifier, IR3870MTR1PBF Datasheet - Page 8

• Manufacturer Part Number: IR3870MTR1PBF
• Description: IC BUCK SYNC ADJ 10A PQFN56
• Manufacturer: International Rectifier
• Series: SupIRBuck™r
• Type: Step-Down (Buck)r

Specifications of IR3870MTR1PBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.5 ~ 12 V
• Current - Output: 10A
• Frequency - Switching: 200kHz ~ 1MHz
• Voltage - Input: 3 ~ 26 V
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 17-PowerVQFN
• Part Status: Active
• Package: PQFN / 5 x 6
• Circuit: Single Output
• Iout (a): 10
• Switch Freq (khz): 0 - 1000
• Input Range (v): 3.0 - 26
• Output Range (v): 0.5 - 12
• Ocp Otp Uvlo Pre-bias Soft Start And: Constant On-Time + OVP no OTP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: IR3870MTR1PBFTR

1.11400
1.10900
1.10400
1.09900
1.09400
1.08900
90
89
88
87
86
85
84
83
82
81
80
TYPICAL OPERATING DATA (25
(Circuit of Figure 15, VCC = 3.3V, V5 = 5V, V
0
Eff: 12.6Vin
0
Figure 5. Output Voltage Regulation Vs
Figure 6. System Efficiency: V
2
2
Output Current
4
Output Current(A)
Eff: 19Vin
4
Output Current (A)
6
6
Ploss: 12.6Vin
8
8
OUT
19Vin
12.6Vin
10
10
= 1.1V
IN
Ploss: 19Vin
12
o
12
= 12.6V, F = 500kHz Unless otherwise noted)
C)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
88
87
86
85
84
83
82
81
80
16
14
12
10
0.0
8
6
4
2
0
0
Eff: 12.6Vin
Figure 7. Light load Efficiency: V
Figure 8. Input Power Vs Output Current
0.2
2
0.4
0.6
Output Current(A)
Output Current(A)
4
Eff: 19Vin
0.8
6
1.0
IR3870MBF
Ploss: 12.6Vin
1.2
Vin Ploss
5V PVcc Ploss
3.3V Vcc Ploss
8
1.4
10
OUT
1.6
8
= 1.1V
Ploss: 19Vin
12
1.8
0.5
0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1
0.1
0.0
0.080
0.070
0.060
0.050
0.040
0.030
0.020
0.010
0.000