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參數(shù)資料
| 型號： | LA5679T |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.03 A SWITCHING CONTROLLER, 320 kHz SWITCHING FREQ-MAX, PDSO36 |
| 封裝： | 0.275 INCH, TSSOP-36 |
| 文件頁數(shù)： | 7/14頁 |
| 文件大小： | 199K |
| 代理商： | LA5679T |
LA5679T
No.7619-2/14
Electrical Characteristics at Ta = 25°C, VCC = VSTBY1 to 3 = 3V, SCP = 0V
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
[Error amplifier]
IN+pin internal bias voltage
VB_IN+
IN2+, IN3+ pin
0.500
0.506
0.512
V
CH1
VLow_FB1
IN1- = 0.5V, IN1+ = 0V, IFB1 = 20
A
1
V
Output “Low” voltage
CH2, CH3
VLow_FB2
IN2, 3- = 1V
0.2
V
CH1
VHi_FB1
IN1- = 0.5V, IN1+ = 2V, IFB1 = -20
A2.25
V
Output “Hi” voltage
CH2, CH3
VHi_FB2
IN2, 3- = 0V
0.81
V
Common-mode input
voltage range
CH1
VICM_IN
0
2
V
[Protection circuit]
Threshold voltage
VSCP
1.1
1.25
1.4
V
[SCP pin current]
ISCP
3.8
A
[Still period adjusting section]
Input bias current
IB_DTC
-15
-3
A
Threshold voltage 1
CH1
VTH1_DTC
FB1 = 0.5V Duty cycle = 100%
0.35
0.4
0.45
V
Threshold voltage 2
CH1
VTH2_DTC
FB1 = 0.5V Duty cycle = 0%
0.67
0.77
0.87
V
Threshold voltage 3
CH2, CH3
VTH3_DTC
FB2, 3 = 1V Duty cycle = 100%
0.80
0.88
0.96
V
Threshold voltage 4
CH2, CH3
VTH4_DTC
FB2, 3 = 1V Duty cycle = 0%
0.40
0.45
0.50
V
[Output block 1 (ch1)]
OUT pin source current
IOUT1_SOUR
FB1 = 2V, DTC1 = 0V, RSET1 = 3.3
,
VOUT1 = 2.7V, ICAPH = 0.5mA
10
mA
OUT pin sync current
IOUT1_SINK
FB1 = 0.5V, DTC1 = 0V,
RSET1 = 3.3
, VOUT1 = 2.3V
20
30
40
mA
ISET pin voltage
VISET
FB1 = 0.5V, DTC1 = 0V,
RSET1 = 3.3
, VOUT1 = 2.3V
0.065
0.1
0.135
V
[Output block 2 to 3 (ch2 to ch3)]
OUT pin source current
IOUT23_SOUR
RSET2, 3 = 680
, VOUT2, 3 = 0.9V,
DTC2, 3 = 1V, FB2, 3 = 1V
20
30
40
mA
OUT pin sync current
IOUT23_SINK
RSET2, 3 = 680
, VOUT2, 3 = 0.3V,
DTC2, 3 = 1V, FB2, 3 = 0V
30
mA
OUT pin High voltage
VOUT23_Hi
RSET2, 3 = 680
, IOUT2, 3= -10mA,
DTC2, 3 = 1V, FB2, 3 = 1V
2
V
OUT pin low voltage
VOUT23_LOW
RSET2, 3 = 680
, IOUT2, 3 = 10mA,
DTC2, 3=1V, FB2, 3 = 0V
0.2
V
ISET pin voltage
VISET23
RSET2, 3 = 680
, VOUT2, 3 = 0.9V,
DTC2, 3 = 1V, FB2, 3 = 1V
0.230
0.350
0.470
V
[Triangular wave generator]
Current setting pin voltage
VT_RT
RT = 5.6k
1.190
1.260
1.330
V
Output current
IOH_CT
VCT = 0.5V, RT = 5.6k
230
A
Output current ratio
IO_CT
0.8
1.0
1.2
Oscillation frequency
fOSC1
200
260
320
kHz
[Reference voltage block]
Reference voltage
VREF
IREF = -1mA
1.244
1.257
1.270
V
Line regulation
VLN_REF
VCC = 1.8V to 11V
10
mV
Load regulation
VLD_REF
IREF = -0.1mA to -1mA
10
mV
[STBY circuit]
ON voltage
VON_STBY
1.15
V
OFF voltage
VOFF_STBY
0.2
V
Pin input current
IIN_STBY
VSTBY1 to 3 = 3V
70
A
[All circuit]
Operating current dissipation
(ICC+IBIAS1 to 3)
ICC1
FB1 = 0.5V, FB2, 3 = 1V
DTC1 = 0V, DTC2, 3 = 1V
RSET2, 3 = 680
, RSET1 = 3.3
12
15
mA
Standby current dissipation
(ICC+IBIAS1 to 3)
ICC2
VSTBY1 to 3 = 0V
1
A
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