EL7554IREZ Intersil, EL7554IREZ Datasheet - Page 8

• Manufacturer Part Number: EL7554IREZ
• Description: IC REG 4A DC-DC STEP DN 28HTSSOP
• Manufacturer: Intersil
• Type: Step-Down (Buck)r

Specifications of EL7554IREZ

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 6 V
• Current - Output: 4A
• Frequency - Switching: 370kHz
• Voltage - Input: 3 ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP Exposed Pad, 28-eTSSOP, 28-HTSSOP
• Primary Input Voltage: 3.3V
• No. Of Outputs: 1
• Output Voltage: 6V
• Output Current: 4A
• No. Of Pins: 28
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 3 - 168 Hours
• Current Rating: 4A
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

Waveforms
V
IN
= V
D
= 3.3V, V
FIGURE 16. VOLTAGE MARGINING
O
FIGURE 14. SHUT-DOWN
= 1.8V, I
FIGURE 12. START-UP
50µs/DIV
1ms/DIV
0.5ms/DIV
O
= 4A, L = 2.2µH, C
8
IN
TM
SEL
ΔV
V
I
V
= 2x10µF, C
IN
EN
O
V
I
V
PG (2V/DIV)
O
IN
IN
O
(2A/DIV)
(2V/DIV)
(200mV/DIV)
(1A/DIV)
(1V/DIV)
(2V/DIV)
OUT
EL7554
= 47µF, C
OSC
= 220pF, T
FIGURE 17. OVER-VOLTAGE SHUT-DOWN
FIGURE 13. STEADY-STATE OPERATION
FIGURE 15. TRANSIENT RESPONSE
A
= +25°C unless otherwise noted.
100µs/DIV
0.5ms/DIV
1µs/DIV
ΔV
V
ΔV
3A
1.0A
I
ΔV
PG
V
V
O
LX
O
LX
November 5, 2007
IN
O
O
(2V/DIV)
(2V/DIV)
(10mV/DIV)
(100mV/DIV)
(5V/DIV)
(100mV/DIV)
FN7360.5