参数资料
型号: IRDC3839
厂商: International Rectifier
文件页数: 5/35页
文件大小: 0K
描述: KIT EVAL REG 6A SUPIRBUCK DC/DC
标准包装: 1
系列: SupIRBuck™
主要目的: DC/DC,LDO 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: IR3839
IR3839MPbF
Recommended Operating Conditions
C
Symbol
PVin
Vin
Vcc/LDO_out
Boot to SW
V o
I o
Fs
T j
Definition
Input Voltage for power stage
Input Voltage for internal LDO *
Supply Voltage *
Supply Voltage
Output Voltage
Output Current
Switching Frequency
Junction Temperature
Min
1.5
7.0
4.5
4.5
0.6
0
225
-40
Max
16
16
6.5
7.5
0.9*Vin
6
1650
125
Units
V
A
kHz
o
* Vcc/LDO_out can be connected to an external regulated supply ( ≈ 5V). If so, the Vin input should be
left unconnected.
Electrical Specifications
Unless otherwise specified, these specification apply over, 7.0V<V in =PVin<16V, Vref=0.6V
in 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
Top Switch
P loss
R ds(on)_Top
V in =12V, V o =1.8V, I o =6A,
Fs=600kHz, L=1.0uH, Note4
V Boot -V sw =5.0V, I D =6A,Tj=25C
1
22.5
34
W
Bottom Switch
R ds(on)_Bot
V cc =5.0V, I D =6A
14.1
19
m ?
Bootstrap Diode Forward
I(Boot)= 30mA
180
260
470
mV
Voltage
SW leakage Current
Isw
SW=0V, Enable=0V
SW=0V, Enable=high, Vp=0V
6
14
μA
SUPPLY CURRENT
V in Supply Current (Standby)
V in Supply Current (Dyn)
I in(Standby)
I in(Dyn)
Enable low , No Switching,
Enable high, Fs=500kHz,
Vin=12V
10.5
400
μA
mA
INTERNAL REGULATOR (LDO)
Output Voltage
IntVcc
Vin(min)=7V, Io=0-50mA,
4.7
5.2
5.7
V
Cload=2.2uF
IntVcc Dropout
Short Circuit Current
IntVcc_drop
Ishort
Io=50mA, Cload=2.2uF
50
70
150
mV
mA
INTERNAL DIGITAL SOFT START
Soft Start Clock Frequency
Clk(SS)
Note4
168
200
254
kHz
Soft Start Ramp Rate
Rev 1.41
Ramp(SS)
0.2
mV/us
5
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