参数资料
型号: IRDC3842A
厂商: International Rectifier
文件页数: 5/34页
文件大小: 0K
描述: BOARD EVAL SUPIRBUCK IR3842A
产品培训模块: SupIRBuck? Family and POL Design Tools Overview
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: 6A
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: IR3842A
PD-97510
IR3842AMPbF
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
21*
5.5
5.5
0.9*Vin
6
1320
125
Units
V
A
kHz
o
* SW must not exceed the Abs Max Rating (25V)
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 =6A,
Fs=600kHz, L=1.0uH, Note4
1.27
W
MOSFET R ds(on)
V Boot -V sw =5V, I D =6A, Tj= 25 C
Top Switch
R ds(on)_Top
o
24.5
34
V cc =5V, I D =6A, Tj= 25 C
Bottom Switch
R ds(on)_Bot
o
14.3
19
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
10
500
μ A
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
3.95
3.65
4.15
3.85
4.35
4.05
Enable-Start-Threshold
Enable-Stop-Threshold
Enable leakage current
Enable_UVLO_Start
Enable_UVLO_Stop
Ien
Supply ramping up
Supply ramping down
Enable=3.3V
1.14
0.9
1.2
1.0
1.36
1.06
15
V
μ A
Rev 13.0
5
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