IR3897MTRPBF International Rectifier, IR3897MTRPBF Datasheet - Page 7

• Manufacturer Part Number: IR3897MTRPBF
• Description: 4A Highly Integrated Single-Input Voltage, Synchronous Buck Regulator in a PQFN package.
• Manufacturer: International Rectifier

Specifications of IR3897MTRPBF

• Part Status: Active and Preferred
• Package: PQFN / 4 x 5
• Circuit: Single Output
• Iout (a): 4
• Switch Freq (khz): 0 - 1500
• Input Range (v): 1.0 - 16
• Output Range (v): 0.5 - 12
• Pbf: PbF Option Available

Oscillator
Error Amplifier
Reference Voltage
Rt Voltage
Frequency Range
Ramp Amplitude
Ramp Offset
Min Pulse Width
Max Duty Cycle
Fixed Off Time
Sync Frequency Range
Sync Pulse Duration
Sync Level Threshold
Input Offset Voltage
Input Bias Current
Input Bias Current
Sink Current
Source Current
Slew Rate
Gain‐Bandwidth Product
DC Gain
Maximum output Voltage
Minimum output Voltage
Common Mode input Voltage
Feedback Voltage
Accuracy
PARAMETER
7
FEBRUARY 02, 2012 |DATA SHEET | Rev 3.2
Single‐Input Voltage, Synchronous Buck Regulator
Isource(E/A)
Tmin(ctrl)
Ramp(os)
Vmax(E/A)
Vmin(E/A)
SYMBOL
Isink(E/A)
Vos_Vref
IVp(E/A)
IFb(E/A)
Vramp
Vos_Vp
Dmax
GBWP
Fsync
Tsync
High
Toff
Low
Gain
Vfb
Vrt
SR
F
s
- 7 -
Rt = 80.6K
Rt = 39.2K
Rt = 15.0K
Vin = 7.0V, Vin slew rate max =
1V/µs, Note 4
Vin = 12V, Vin slew rate max =
1V/µs, Note 4
Vin = 21V, Vin slew rate max =
1V/µs, Note 4
Vin=Vcc=5V, For external Vcc
operation, Note 4
Note 4
Note 4
Fs = 300kHz, PVin = Vin = 12V
Note 4
VFb – Vref, Vref = 0.5V
VFb – Vp, Vp = 0.5V
Note 4
Note 4
Note 4
Vref and Vp pin floating
0°C < Tj < +70°C
‐40°C < Tj < +125°C, Note 3
4A Highly Integrated SupIRBuck
CONDITIONS
1350
MIN
‐0.5
‐1.0
270
540
270
100
‐1.5
‐1.5
100
0.4
1.7
86
20
‐1
3
0
4
7
0
TM
1500
1.05
1.80
3.15
0.75
0.16
TYP
0.85
300
600
200
200
1.0
110
0.5
7.5
2.0
12
30
IR3897
MAX
1650
1650
+0.5
+1.0
330
660
250
+1.5
+1.5
120
100
0.6
1.2
2.3
1.2
60
+1
+4
11
20
40
PD‐97663
UNIT
Vp‐p
V/µs
MHz
kHz
kHz
mA
mA
mV
ns
ns
ns
µA
dB
%
%
%
V
V
V
V
V
V