ILC6380 데이터 시트보기 (PDF) - Impala Linear Corporation
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ILC6380 Datasheet PDF : 6 Pages
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SOT-89 Step-up Dual-Mode Switcher with Shutdown
Electrical Characteristics ILC6380BP-50
VOUT = 5.0V, FOSC = 100kHz TA = 25°C. Unless otherwise specified, VIN = VOUTX0.6, IOUT = 50mA. See the schematic, figure 4.
Parameter
Output Voltage
Input Voltage
Oscillation Startup Voltage
Operation Startup Voltage
Supply Current 1
(See Note 2)
Supply Current 2
EXT “High” On-Resistance
EXT “Low” On-Resistance
Oscillator Frequency
Maximum Duty Ratio
CE “High” Voltage
CE “Low” Voltage
CE “High” Current
CE “Low” Current
Efficiency
Slow Start Time
Notes:
Symbol
VOUT
VIN
VST2
VST1
IDD 1
IDD 2
REXTH
REXTL
FOSC
MAXDTY
VCEH
VCEL
ICEH
ICEL
EFFI
TSS
Conditions
Test Circuit of Figure 2
VOUT = VST2
IOUT = 1mA
EXT = 10kΩ pull-up to 5V,
VOUT = 4.5V
EXT = 10kΩ pull-up to 5V,
VOUT = 5.5V
EXT = 10kΩ pull-up to 5V,
VOUT = 4.5V, VEXT = VOUT – 0.4V
EXT = 10Ω pull-up to 5V,
VOUT = 4.5V, VEXT = VOUT - 0.4V
EXT = 10kΩ pull-up to 5V, VOUT =
4.5V, Measuring of EXT waveform
EXT = 10kΩ pull-up to 5V, VOUT =
4.5V, Measuring of EXT high state
EXT = 10kΩ pull-up to 5V, VOUT =
4.5V, Existence of Oscillation
EXT = 10kΩ pull-up to 5V, VOUT =
4.5V, Stopped EXT Oscillation
EXT: 10kΩ pull-up to 5V,
VOUT = 4.5V, VCE = VOUT X 0.95V
EXT = 10kΩ pull-up to 5V,
VOUT = 4.5V, VCE = 0V
Min
4.875
Typ
5.000
78.6
Max
5.125
10
0.8
0.9
131.1
Units
V
V
V
V
µA
6.9 13.8 µA
30
50
Ω
30
50
Ω
85 100 115 kHz
80
87
92
%
0.75
V
0.20 V
0.25 µA
-0.25 µA
85
%
10
msec
1. The Schottky diode (S.D.), in figure 3 must be type MA735, with Reverse current (IR) < 1.0µA at reverse voltage (VR)=10.0V
2. “Supply Current 1” is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically
operates which results in less average power consumption.
The current that is actually provided by external VIN source is represented by “No-Load Input Current (IIN)”
Typical Applications
CE
SD
VOUT
L
VIN
3
2
1
+
ILC6380
CL
4
5
GND
Figure 3
L: 100µH ( SUMIDA, CD-54)
SD: Diode (Schottky diode; MATSUSHITA MA735)
CL: 16V 47µF (Tantalum Capacitor; NICHICON, F93)
Impala Linear Corporation
ILC6380/1 1.4
(408) 574-3939
CE
SD
VOUT
L
VIN
3
2
1
+
ILC6381
CL
CB
4
5
Tr
RB
Figure 4
L: 47µH ( SUMIDA, CD-54)
SD: Diode (Schottky diode; MATSUSHITA MA735)
CL: 16V 47µF (Tantalum Capacitor; NICHICON, F93)
RB: 1kW
CB: 3300pF
Tr: 2SC3279, 2SDI628G
www.impalalinear.com
Sept 1999 3
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