参数资料
型号: IRDC3853
厂商: International Rectifier
文件页数: 5/35页
文件大小: 0K
描述: BOARD EVAL FOR IR3853
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: 0 ~ 4A
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: IR3853
PD-97516
IR3853MPbF
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
4
1650
125
Units
V
A
kHz
o
*SW node should not exceed 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
UNIT
POWER STAGE
Power Losses
P loss
Vcc=5V, V in =12V, V o =1.8V,
0.642
W
I o =4A, Fs=600kHz, L=2.2uH,
Note4
V cc =5V, I D =4A, T j =25 C
Top Switch
Bottom Switch
R ds(on)_Top
R ds(on)_Bot
V Boot -V sw =5V, I D =4A, Tj=25 o C
o
21
19.75
29
26.5
m Ω
Deadband Time
Bootstrap Diode Forward
T db
Note4
I(Boot)= 30mA
5
180
10
260
30
470
ns
mV
Voltage
SW leakage Current
Isw
SW=0V, Enable=0V
SUPPLY CURRENT
SW=0V, Enable=high, SS=3V,
Vseq=0V, Note4
6
uA
V CC Supply Current (Standby)
I CC(Standby)
SS=0V, Vcc=5V, Enable low ,
No Switching
500
uA
V CC Supply Current (Dyn)
I CC(Dyn)
SS=3V, Vcc=5V, Enable high,
Fs=500kHz
6
11
mA
REFERENCE VOLTAGE
0 C<Tj<125 C
Feedback Voltage
Accuracy
VFB
o o
-1.0
0.7
+1.0
V
-40 o C<Tj<125 o C, Note3
-2.0
-2.0
%
SOFT START / SD
Soft Start Current
Soft Start Clamp Voltage
ISS
Vss(clamp)
Source
14
2.7
20
3.0
26
3.3
uA
Shutdown Output Threshold
Rev 4.0
SD
0.3
V
5
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