IR3894 IRF [International Rectifier], IR3894 Datasheet - Page 7
IR3894
Manufacturer Part Number
IR3894
Description
12A HIGHLY INTERGRATED SUPLRBUCK
Manufacturer
IRF [International Rectifier]
Datasheet
1.IR3894.pdf
(43 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
IR3894MTRPBF
Manufacturer:
IR
Quantity:
12 000
Oscillator
Error Amplifier
Reference Voltage
Zero‐crossing Comparator Offset
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
AUGUST 08, 2012 | DATA SHEET | Rev 3.1
Single‐Input Voltage, Synchronous Buck Regulator
Isource(E/A)
Vmax(E/A)
Vmin(E/A)
Tmin(ctrl)
Ramp(os)
Isink(E/A)
Vos_Vref
SYMBOL
IVp(E/A)
IFb(E/A)
Vos_Vp
Vos_zc
Vramp
GBWP
Dmax
Fsync
Tsync
High
Gain
Low
Toff
Vfb
Vrt
SR
F
s
Rt = 80.6K
Rt = 39.2K
Rt = 15.0K
Vin = 6.8V, 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
Vcc=Vin=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,Vref=0
Note 4
Note 4
Note 4
Vref and Vp pin floating
0°C < Tj < 70°C
- 7 -`
12A Highly Integrated SupIRBuck
CONDITIONS
Note 4
1350
MIN
270
540
270
100
‐1.5
‐1.5
100
‐0.5
0.4
1.7
86
20
‐4
‐1
3
0
4
7
0
1500
1.02
1.80
3.15
0.75
0.16
0.85
TYP
300
600
200
200
110
1.0
7.5
2.0
0.5
12
30
0
IR3894
MAX
1650
1650
+1.5
+1.5
+0.5
330
660
250
120
100
0.6
1.2
2.3
1.2
60
+1
+4
11
20
40
4
PD‐97745
UNIT
Vp‐p
V/µs
MHz
kHz
kHz
mV
mA
mA
mV
µA
dB
ns
ns
ns
%
%
%
V
V
V
V
V
V