XC9511_1 Datasheet, PDF (4/35 Pages) Torex Semiconductor – Synchronous Step-Down DC/DC Converter with built-in LDO Regulator in parallel plus Voltage Detector

XC9511 Series
■ELECTRICAL CHARACTERISTICS
XC9511xxxCSx
●Common Characteristics
PARAMETER
Supply Current 1
Supply Current 2
Input Voltage Range
SYMBOL
IDD1
IDD2
VIN
CONDITIONS
VIN=CE=DCOUT=5.0V
VIN=CE=5.0V, DCOUT=0V
MIN.
-
-
2.4
TYP.
250
300
-
MAX.
310
360
6.0
Topr=25℃
UNITS CIRCUIT
μA
1
μA
1
V
-
●DC/DC Converter (1.5V product)
PARAMETER
SYMBOL
CONDITIONS
MIN.
Output Voltage
Oscillation Frequency
Maximum Duty Ratio
Minimum Duty Ratio
PFM Duty Ratio
* XC9511D/E/F
U.V.L.O. Voltage (*1)
DCOUT(E)
FOSC
MAXDUTY
MINDUTY
PFMDUTY
VUVLO
Connected to the external components
IDOUT=30mA
Connected to the external components
IDOUT=10mA
DCOUT=0V
DCOUT=VIN
Connected to the external components
No load
Connected to the external components
1.470
1.02
100
-
21
1.00
LX SW ‘High’ ON Resistance (*2)
LX SW ‘Low’ ON Resistance
LX SW ‘High’ Leak Current (*11)
LX SW ‘Low’ Leak Current (*11)
Maximum Output Current
RLXH
RLXL
IleakH
IleakL
Imax1
DCOUT=0V, LX=VIN-0.05V
-
Connected to the external components,
-
VIN=5.0V
VIN=LX=6.0V, CE=0V
-
VIN=6.0V, LX=CE=0V
-
Connected to the external components 800
Current Limit (*8)
Ilim1
1.0
Efficiency (*3)
EFFI
Connected to the external components
-
IDOUT=100mA
Output Voltage
U DCOUT IDOUT=30mA
Temperature Characteristics ^{△Topr・DCOUT} -40℃≦Topr≦85℃
-
Soft-Start Time
TSS
Connected to the external components,
CE=0VtVIN, IDOUT=1mA
2
Latch Time (*4, 9)
Connected to the external components,
Tlat
-
VIN=CE=5.0V, Short DCOUT by 1Ωresistor
TYP.
1.500
1.20
-
-
30
1.40
0.5
0.5
0.05
0.05
-
1.1
90
±100
5
8
MAX.
1.530
1.38
-
0
38
1.78
0.9
0.9
1.00
1.00
-
-
-
-
10
25
Topr=25℃
UNITS CIRCUIT
V
3
MHz
3
%
4
%
4
%
3
V
3
Ω
5
Ω
3
μA
11
μA
11
mA
3
A
6
%
3
ppm/
3
℃
ms
3
ms
10
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