EL7515 データシートの表示（PDF） - Renesas Electronics
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EL7515 Datasheet PDF : 9 Pages
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EL7515
Absolute Maximum Ratings (TA = +25°C)
EN, LBI, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+12V
LX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+18V
Thermal Information
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Operating Junction Temperature: . . . . . . . . . . . . . . . . . . . . . +135°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are
at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications VIN = 5V, VOUT = 12V, L = 10µH, IOUT = 0mA, RT = 100k, TA = +25°C, Unless Otherwise Specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN
(Note 1)
TYP
MAX
(Note 1) UNIT
VIN
VOUT
IQ1
IQ2
VFB
IB
Input Voltage Range
Output Voltage Range
Quiescent Current - Shut-down
Quiescent Current
Feedback Voltage
Feedback Input Bias Current
1.8
13.2
V
4.5
17
V
VEN = 0, feedback resistors disconnected
1
µA
VEN = 2V
1.4
2
mA
1.29
1.33
1.37
V
0.10
µA
DMAX
ILIM
Maximum Duty Cycle
Current Limit - Max Peak Input
Current
84
90
%
1
1.4
A
ISHDN
Shut-down Input Bias Current
VLBI
LBI Threshold Voltage
VOL-LBO
LBO Output Low
ILEAK-LBO
LBO Output Leakage Current
rDS(ON)
Switch On Resistance
ILEAK-SWITCH
Switch Leakage Current
VOUT/VIN/VOUT Line Regulation
VOUT/VOUT
Load Regulation
fOSC-MAX
Maximum Switching Frequency
fOSC1
Switching Frequency
VHI_EN
EN Input High Threshold
ILBO = 1mA
VLBI = 250mV, VLBO = 5V
at 12V output
3V < VIN < 6V, VOUT = 12V, no load
IOUT = 50mA to 150mA
RT = 49.9k
1
µA
180
220
250
mV
0.1
0.2
V
0.02
2
µA
220
m
1
µA
0.4
%/V
1
%
1200
kHz
600
670
750
kHz
1.6
V
VLO_EN
EN Input Low Threshold
0.5
V
Pin Descriptions
PIN NUMBER
1
2
3
4
5
6
7
8
9
10
PIN NAME
PGND
SGND
RT
EN
LBI
LBO
SS
FB
VDD
LX
PIN FUNCTION
Power ground; connected to the source of internal N-Channel power MOSFET
Signal ground; ground reference for all the control circuitry; needs to have only a single connection to PGND
Timing resistor to adjust the oscillation frequency of the converter
Chip enable; connects to logic HI (>1.6V) for chip to function
Low battery input; connects to a sensing voltage, or left open if function is not used
Low battery detection output; connected to the open drain of a MOSFET; able to sink 1mA current
Soft-start; connects to a capacitor to control the start-up of the converter
Voltage feedback input; needs to connect to resistor divider to decide VO
Control circuit positive supply
Inductor drive pin; connected to the drain of internal N-Channel power MOSFET
FN7120 Rev 2.00
August 10, 2007
Page 3 of 9
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