EL7551 Ver la hoja de datos (PDF) - Intersil
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EL7551 Datasheet PDF : 9 Pages
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EL7551
Absolute Maximum Ratings (TA = 25°C)
Supply Voltage between VIN or VDD and GND . . . . . . . . . . . . +6.5V
VLX Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VIN +0.3V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . GND -0.3V, VDD +0.3V
VHI Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . GND -0.3V, VLX +6V
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Operating Ambient Temperature . . . . . . . . . . . . . . . .-40°C to +85°C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . +135°
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests
are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
DC Electrical Specifications VDD = VIN = 5V, TA = TJ = 25°C, COSC = 1.2nF, unless otherwise specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
VREF
VREFTC
VREFLOAD
VRAMP
IOSC_CHG
IOSC_DIS
IVDD+VDRV
IVDD_OFF
VDD_OFF
VDD_ON
TOT
THYS
ILEAK
ILMAX
RDSON
RDSONTC
VFB
VFB_LINE
VFB_LOAD
VFB_TC
IFB
VEN_HI
VEN_LO
IEN
Reference Accuracy
1.24
Reference Temperature Coefficient
Reference Load Regulation
0 < IREF < 50µA
-1
Oscillator Ramp Amplitude
Oscillator Charge Current
Oscillator Discharge Current
VDD+VDRV Supply Current
VDD Standby Current
VDD for Shutdown
VDD for Startup
Over Temperature Threshold
0.1V < VOSC < 1.25V
0.1V < VOSC < 1.25V
VEN = 4V, FOSC = 120kHz
EN = 0
3.5
3.95
Over Temperature Hysteresis
Internal FET Leakage Current
Peak Current Limit
EN = 0, LX = 5V (low FET), LX = 0V (high FET)
2
FET On Resistance
Wafer level test only
RDSON Tempco
Output Initial Accuracy
Output Line Regulation
Output Load Regulation
Output Temperature Stability
Feedback Input Pull Up Current
EN Input High Level
ILOAD = 0A
VIN = 5V, ∆VIN = 10%, ILOAD = 0A
0.1A < ILOAD < 1A
-40°C < TA < 85°C, ILOAD = 0.5A
VFB = 0V
0.960
EN Input Low Level
1
Enable Pull Up Current
VEN = 0
-4
1.26
50
1.15
200
8
3.5
1
135
20
45
0.2
0.975
0.5
0.5
±1
100
3.2
-2.5
MAX
1.28
5
1.5
4
4.45
10
95
0.99
200
4
UNIT
V
ppm/°C
%
V
µA
mA
mA
mA
V
V
°C
°C
µA
A
mΩ
mΩ/°C
V
%
%
%
nA
V
V
µA
2
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