EL7551C View Datasheet(PDF) - Elantec -> Intersil
Part Name
Description
Manufacturer
EL7551C Datasheet PDF : 11 Pages
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EL7551C - Preliminary
Monolithic 1 Amp DC:DC Step-down Regulator
Absolute Maximum Ratings (TA = 25°C)
Supply Voltage between VIN or VDD and GND
VLX Voltage
Input Voltage
VHI Voltage
+6.5V
VIN +0.3V
GND -0.3V, VDD +0.3V
GND -0.3V, VLX +6V
Storage Temperature
Operating Ambient Temperature
Operating Junction Temperature
-65°C to +150°C
-40°C to +85°C
+135°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.
DC Characteristics
VDD = VIN = 5V, TA = TJ = 25°C, COSC = 1.2nF, unless otherwise specified.
Parameter
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
Description
Reference Accuracy
Reference Temperature Coefficient
Reference Load Regulation
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
Over Temperature Hysteresis
Internal FET Leakage Current
Peak Current Limit
FET On Resistance
RDSON Tempco
Output Initial Accuracy
Output Line Regulation
Output Load Regulation
Output Temperature Stability
Feedback Input Pull Up Current
EN Input High Level
EN Input Low Level
Enable Pull Up Current
Conditions
0 < IREF < 50µA
0.1V < VOSC < 1.25V
0.1V < VOSC < 1.25V
VEN = 4V, FOSC = 120kHz
EN = 0
EN = 0, LX = 5V (low FET), LX = 0V (high FET)
Wafer level test only
ILOAD = 0A
VIN = 5V, ∆VIN = 10%, ILOAD = 0A
0.1A < ILOAD < 1A
-40°C < TA < 85°C, ILOAD = 0.5A
VFB = 0V
VEN = 0
Min
1.24
-1
3.5
3.95
2
0.960
1
-4
Typ
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
Unit
1.28
V
ppm/°C
%
V
µA
mA
5
mA
1.5
mA
4
V
4.45
V
°C
°C
10
µA
A
95
mΩ
mΩ/°C
0.99
V
%
%
%
200
nA
4
V
V
µA
Closed Loop AC Electrical Characteristics
VS = VIN = 5V, TA = TJ = 25°C, COSC = 1.2nF, unless otherwise specified.
Parameter
Description
Conditions
FOSC
tSYNC
MSS
tBRM
tLEB
DMAX
Oscillator Initial Accuracy
Minimum Oscillator Sync Width
Soft Start Slope
FET Break Before Make Delay
High Side FET Minimum On Time
Maximum Duty Cycle
2
Min
Typ
Max
Unit
105
117
130
kHz
25
ns
0.5
V/ms
15
ns
150
ns
95
%
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