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参数资料
| 型号： | LA5664M |
| 元件分类： | 稳压器 |
| 英文描述： | 0.25 A SWITCHING REGULATOR, 84 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封装： | 0.225 INCH, MFP-14 |
| 文件页数： | 2/7页 |
| 文件大小： | 80K |
| 代理商： | LA5664M |
LA5664M
No.A0623-2/7
Operating Conditions at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Input voltage 1
VCC1
4 to 5.6
V
Input voltage 2
VCC2
5.53 to 5.87
V
VREG5 output current
IREG
0 to 250
mA
OUT pin sink current
IOUT
0 to 1
A
Electrical Characteristics at Ta
= 25°C
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
All circuits (VCC1 = 5V, VCC2 = 5.7V, VON/0FF = 5V, VIN = 6V, VIPK = VCC1, DRVE = OPEN, OUT = OPEN)
VCC1 current drain
ICC1
CT = 300pF
5.5
mA
VCC2 current drain
ICC2
IREG5 = 0mA
6
mA
VCC1 current drain at standby
ICC1(OFF)
VON/0FF = 0V
10
A
VCC2 current drain at standby
ICC2(OFF)
VON/0FF = 0V
10
A
ON voltage of ON/OFF pin
ON/OFF(ON)
2
V
OFF voltage of ON/OFF pin
ON/OFF(OFF)
0.7
V
ON/OFF pin input current
ION/OFF
VON/OFF = 2V
80
100
A
OC pin saturation voltage
VOC(sat)
VON/OFF = 2V, IOC = 300
A
0.5
V
Switching regulator (VCC1 = 5V, VON/0FF = 5V, VIN = 6V, VIPK = VCC1, DRVE = OPEN, OUT = OPEN)
CT pin oscillation frequency
fOSC
CT= 300pF
56
70
84
kHz
CT pin charge current
Ichg
95
A
CT pin discharge current
Idischg
28
A
CT pin charge/discharge current
ratio
Ichg/dischg
3.4
SOFT pin charge current
ISOFT
110
A
SOFT pin voltage
VSOFT
0.9
1.2
1.5
V
IRK pin current limit detection
voltage
Vipk (SENSE)
VIN = 0V, DRIVE = 82
for VCC1
250
300
350
mV
OUT pin saturation voltage
VSAT
IOUT = 1A, VIN = 0V, DRIVE = 82 for VCC1
0.45
0.7
V
OUT pin current at OFF
ILEAK
VOUT = 5V
0.01
100
A
OUT pin maximum duty cycle
DUTY
VIN = 0V, DRIVE = 82
for VCC1
83
%
IN pin threshold voltage
VINTH
DRIVE = 82
for VCC1
5.53
5.70
5.87
V
IN pin input current
IIN
VIN = 6V
15
22
29
A
REG5 low-saturation regulator (VCC2 = 5.7V, VON/0FF = 5V, IREG5 = 250mA)
Output voltage
VO
4.85
5
5.15
V
Dropout voltage
VDROP
0.25
0.38
V
Line regulation
VOLN
VCC2 = 5.53V to 6.0V
20
mV
Load regulation
VOLD
IREG5 = 5 to 250mA
80
mV
Peak output current
IOP
250
mA
Output short-circuit current
IOsc
100
250
mA
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