EL7554IREZT13 INTERSIL [Intersil Corporation], EL7554IREZT13 Datasheet - Page 4

• Manufacturer Part Number: EL7554IREZT13
• Description: Monolithic 4 Amp DC-DC Step-Down Regulator
• Manufacturer: INTERSIL [Intersil Corporation]

DC Electrical Specifications
Pin Descriptions
V
V
I
TM, S
TM, S
8, 9, 10, 11, 12, 13
EN
PARAMETER
EN_HI
EN_LO
PIN NUMBER
16, 17, 18
19, 20, 21
EL_HI
EL_LO
14, 15
22
23
24
25
26
27
28
1
2
3
4
5
6
7
EN Input High Level
EN Input Low Level
Enable Pull-up Current
Input High Level
Input Low Level
PIN NAME
COMP
PGND
COSC
SGND
VREF
VDD
SEL
STP
STN
VTJ
VIN
VO
TM
NC
PG
EN
FB
LX
DESCRIPTION
4
V
DD
Error amplifier output; place loop compensation components here
Bandgap reference bypass capacitor; typically 0.01µF to 0.047µF to SGND
Voltage feedback input; connected to external resistor divider between V
output; also used for speed-up capacitor connection
Output sense for fixed output; also used for speed-up capacitor connection
Junction temperature monitor output, connected to a 0.01µF - 0.047µF to SGND
Stress test enable; allows ±5% output movement; needs a pull-down resistor (1K - 100K); connect to
SGND if function is not used
Positive or negative voltage margining set pin; needs a pull-down resistor (1K - 100K); connect to
SGND if function is not used
Inductor drive pin; high current output whose average voltage equals the regulator output voltage
Not used
Ground return of the regulator; connected to the source of the low-side synchronous NMOS Power FET
Power supply input of the regulator; connected to the drain of the high-side PMOS Power FET
Control circuit positive supply; connected to V
Power-good window comparator output; logic 1 when regulator output is within ±10% of target output
voltage
Chip enable, active high; a 2µA internal pull-up current enables the device if the pin is left open; a
capacitor can be added at this pin to delay the start of a converter
Auxilliary supply tracking positive input; tied to regulator output to synchronize start-up with a second
supply; leave open for standalone operation; 2µA internal pull-up current
Auxiliary supply tracking negative input; connect to output of a second supply to synchronize start-up;
leave open for standalone operation; 2µA internal pull-up current
Oscillator timing capacitor (see performance curves)
Control circuit negative supply or signal ground
= V
IN
= 3.3V, T
V
A
EN
= T
= 0
J
EL7554
= 25°C, C
CONDITIONS
OSC
= 390pF, Unless Otherwise Specified
PIN FUNCTION
IN
through an internal 20Ω resistor
MIN
2.6
2.6
-4
OUT
TYP
-2.5
and SGND for adjustable
MAX
1
1
January 31, 2005
FN7360.2
UNIT
µA
V
V
V
V