EL7531IYZ Intersil, EL7531IYZ Datasheet - Page 6

• Manufacturer Part Number: EL7531IYZ
• Description: IC REG 1A STEP DOWN MONO 10-MSOP
• Manufacturer: Intersil
• Type: Step-Down (Buck)r

Specifications of EL7531IYZ

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 5.5 V
• Current - Output: 1A
• Frequency - Switching: 1.4MHz
• Voltage - Input: 2.5 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Rohs Compliant: YES
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

Performance Curves and Waveforms
All waveforms are taken at V
noted.
FIGURE 15. PFM STEADY-STATE OPERATION WAVEFORM
FIGURE 17. EXTERNAL SYNCHRONIZATION TO 2MHz
(I
FIGURE 13. START-UP AT I
O
= 100mA)
200µs/DIV
2µs/DIV
0.2µs/DIV
IN
= 3.3V, V
6
O
= 1.8V, I
O
= 1A
O
= 1A with component values shown on page 1 at room ambient temperature, unless otherwise
V
(2V/DIV)
V
(2V/DIV)
PG
I
(0.5A/DIV)
ΔV
(50mV/DIV)
IN
LX
(2V/DIV)
I
(0.5A/DIV)
IN
O
L
I
(0.5A/DIV)
SYNC
(2V/DIV)
LX
(2V/DIV)
L
O
(Continued)
EL7531
FIGURE 16. PWM STEADY-STATE OPERATION (I
FIGURE 18. EXTERNAL SYNCHRONIZATION TO 12MHz
FIGURE 14. ENABLE AND SHUT-DOWN
500µs/DIV
0.5µs/DIV
20ns/DIV
PG
EN
I
(0.5A/DIV)
V
(2V/DIV)
IN
LX
(2V/DIV)
I
(0.5A/DIV)
O
O
L
ΔV
(10mV/DIV)
July 13, 2006
I
(0.5A/DIV)
SYNC
(2V/DIV)
LX
(2V/DIV)
L
= 1A)
O
FN7428.9