EL7640, EL7641, EL7642
Absolute Maximum Ratings (T = 25°C)
IN, CTL to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.5V
COMP, FB, FBP, FBN, DEL, REF to AGND. . . . . -0.3V to V +0.3V
IN
A
COM, DRN to AGND . . . . . . . . . . . . . . . . . . . . -0.3V to V
+0.3V
SRC
LX Maximum Continuous RMS Output Current. . . . . . . . . . . . . 1.6A
OUT1, OUT2, OUT3, OUT4, OUT5
PGND, BGND to AGND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3V
LX to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to +24V
SUP to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to +18V
DRVP, SRC to AGND . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to +36V
POS1, NEG1, OUT1, POS2, NEG2, OUT2, POS3, OUT3,
Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . ±75mA
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Maximum Continuous Junction Temperature . . . . . . . . . . . . +125°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
Operating Ambient Temperature . . . . . . . . . . . . . . . .-40°C to +85°C
POS4, NEG4, OUT4, POS5, OUT5 to AGND . .-0.3V to V
DRVN to AGND . . . . . . . . . . . . . . . . . . . . . . . V -20V to V +0.3V
IN IN
+0.3V
SUP
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: T = T = T
A
J
C
Electrical Specifications
V
= 3V, V
BOOST
= V
= 12V, V
= 20V, Over temperature from -40°C to 85°C.
SRC
IN
SUP
Unless Otherwise Specified.
PARAMETER
SUPPLY
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
V
V
V
Input Supply Range
2.6
2.4
2.2
5.5
2.6
2.4
2.5
10
V
V
IN
Undervoltage Lockout Threshold
Undervoltage Lockout Threshold
Quiescent Current
V
V
rising
falling
2.5
2.3
LOR
LOF
IN
IN
V
I
I
LX not switching
LX switching
mA
mA
ms
V
S
Quiescent Current - Switching
Fault Delay Time
5
SS
T
C
= 220nF
52
FD
DEL
= 25°C
A
V
Reference Voltage
T
1.19
1.215
1.215
140
1.235
1.238
REF
1.187
V
SHUTDN
Thermal Shutdown Temperature
°C
MAIN BOOST REGULATOR
V
Output Voltage Range
(Note 1)
V
+
18
V
BOOST
IN
15%
1050
82
F
Oscillator Frequency
Maximum Duty Cycle
Boost Feedback Voltage
1200
85
1350
kHz
%
V
OSC
D
CM
V
T
= 25°C
1.192
1.188
0.85
1.205
1.205
0.925
0.1
1.218
1.222
1.020
FBB
A
V
V
FB Fault Trip Level
Load Regulation
Falling edge
50mA < I
V
FTB
∆V
∆I
/
/
< 250mA
LOAD
%
BOOST
BOOST
∆V
∆V
Line Regulation
V
V
= 2.6V to 5.5V
0.08
%/V
BOOST
IN
IN
I
Input Bias Current
FB Transconductance
LX On Resistance
LX Leakage Current
LX Current Limit
= 1.35V
500
40
nA
µA/V
mΩ
µA
FB
gmV
FB
dI = ±2.5µA at COMP, FB = COMP
160
160
0.02
3.0
2
R
LX
ON
I
I
t
LX
LEAK
V
= 1.35V, V = 13V
LX
FB
LX
Duty cycle = 65% (Note 1)
= 220nF
A
LIM
B
Soft-Start Period
C
ms
SS
DEL
FN7415.1
3
September 26, 2005
INTERSIL [ Intersil ]
