参数资料
型号: IRDC3840
厂商: International Rectifier
文件页数: 5/32页
文件大小: 0K
描述: BOARD EVAL SYNC BUCK CONVERTER
产品变化通告: (EP) Parts Discontinuation 25/May/2012
标准包装: 1
系列: SupIRBuck™
主要目的: DC/DC,步降
输出及类型: 1,非隔离
输出电压: 1.8V
电流 - 输出: 12A
输入电压: 12V
稳压器拓扑结构: 降压
频率 - 开关: 600kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: IR3840
IR3840MPbF
Recommended Operating Conditions
C
Symbol
V in
V cc
Boot to SW
V o
I o
Fs
T j
Definition
Input Voltage
Supply Voltage
Supply Voltage
Output Voltage
Output Current
Switching Frequency
Junction Temperature
Min
1.5
4.5
4.5
0.7
0
225
-40
Max
16
5.5
5.5
0.9*Vin
12
1650
125
Units
V
A
kHz
o
Electrical Specifications
Unless otherwise specified, these specification apply over 4.5V< V cc <5.5V, V in =12V, 0 o C<T j < 125 o C.
Typical values are specified at T a = 25 o C.
Parameter
Symbol
Test Condition
Min
TYP
MAX
Units
Power Loss
Power Loss
P loss
Vcc=5V, V in =12V, V o =1.8V, I o =12A,
Fs=600kHz, L=0.6uH, Note4
2.6
W
MOSFET R ds(on)
V Boot -V sw =5V, I D =14A, Tj=25 C
Top Switch
R ds(on)_Top
0
8.3
12.0
V cc =5V, I D =14A, Tj=25 C
Bottom Switch
R ds(on)_Bot
0
5.9
8.0
m Ω
Reference Voltage
0 C<Tj<125 C
Feedback Voltage
Accuracy
V FB
o o
-1.0
0.7
+1.0
V
-40 C<Tj<125 C, Note3
o o
-2.0
+2.0
%
Supply Current
V cc Supply Current (Standby)
V cc Supply Current (Dyn)
I CC(Standby)
I CC(Dyn)
SS=0V, No Switching, Enable low
SS=3V, Vcc=5V, Fs=500kHz
Enable high
15
500
uA
mA
Under Voltage Lockout
V cc -Start-Threshold
V cc -Stop-Threshold
V CC _UVLO_Start
V CC _UVLO_Stop
Vcc Rising Trip Level
Vcc Falling Trip Level
4.06
3.76
4.26
3.96
4.46
4.16
V cc -Hysteresis
Enable-Start-Threshold
Enable-Stop-Threshold
Enable-Hysteresis
Enable leakage current
Vcc-Hys
Enable_UVLO_Start
Enable_UVLO_Stop
Enable_Hys
Ien
Supply ramping up and down
Supply ramping up
Supply ramping down
Supply ramping up and down
Enable=3.3V
0.25
1.14
0.9
0.16
0.3
1.2
1.0
0.2
0.38
1.36
1.06
0.25
18
V
uA
06/18/09
5
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