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EL7512C डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - High Frequency PWM Step-Up Regulator - Elantec Semiconductor

भाग संख्या EL7512C
समारोह High Frequency PWM Step-Up Regulator
मैन्युफैक्चरर्स Elantec Semiconductor 
लोगो Elantec Semiconductor लोगो 
पूर्व दर्शन
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<?=EL7512C?> डेटा पत्रक पीडीएफ

EL7512C pdf
EL7512C - Preliminary
High Frequency PWM Step-Up Regulator
Absolute Maximum Ratings (TA = 25°C)
Values beyond absolute maximum ratings can cause the device to be pre-
maturely damaged. Absolute maximum ratings are stress ratings only
and functional device operation is not implied
VIN, LBI, VDD
+18V
LX Voltage
Storage Temperature
Operating Temperature
Lead Temperature
20V
-65°C to +150°C
-40°C to +85°C
300°C
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 Characteristics
VIN = 5V, VOUT = 12V, IOUT = 0mA, FOSC = 600kHz, TA = 25°C unless otherwise specified.
Parameter
Description
Condition
IQ1 Quiescent Current - Shut-down
VSHDN = 0V
IQ2 Quiensent Current
VSHDN = 2V, Frequency = 600kHz
VFB Feedback Voltage
IB Feedback Input Bias Current
VIN
DMAX
ILIM
ISHDN
VLBI
VOL-LBO
ILEAK-LBO
RDS-ON
ILEAK-SWITCH
VOUT/VIN
VOUT/IOUT
FOSC-RANGE
FOSC1
VHI-SHDN
Input Voltage Range
Maximum Duty Cycle
Current limit - Max Average Input Current
Shut-down Input Bias Current
LBI Threshold Voltage
LBO Output Low
LBO Output Leakage Current
Switch On Resistance
Switch Leakage Current
Line Regulation
Load Regulation
Frequency Range
Switching Frequency
SHDN Input High Threshold
ILBO = 1mA
VLBI = 250mV, VLBO = 5V
at 12V output
3V < VIN < 6V, VOUT = 12V, no load
IOUT < 250µA
ROSC = 100k
VLO-SHDN SHDN Input Low Threshold
Min
1.31
2
84
1000
190
530
1.6
Typ
2.5
1.35
90
1250
220
0.1
0.02
300
0.5
670
Max
3
4
1.39
0.10
1500
1
250
0.2
1
1
0.15
1
1200
800
0.5
Unit
µA
mA
V
µA
V
%
mA
µA
mV
V
µA
m
µA
%/V
%
kHz
kHz
V
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 resister 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 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
2

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