EL7531IY Intersil, EL7531IY Datasheet - Page 4

• Manufacturer Part Number: EL7531IY
• Description: IC REG 1A STEP DOWN MONO 10-MSOP
• Manufacturer: Intersil
• Type: Step-Down (Buck)r

Specifications of EL7531IY

• 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
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

Performance Curves and Waveforms
All waveforms are taken at V
noted.
FIGURE 5. F
100
FIGURE 1. EFFICIENCY vs I
FIGURE 3. EFFICIENCY vs I
100
95
90
85
80
75
70
65
60
55
50
45
40
1.44
1.42
1.38
1.36
1.34
1.32
95
90
85
80
75
70
65
60
55
50
45
40
0.001
1.4
0.001
-50
V
V
V
O
O
V
O
V
= 1.8V
S
= 2.5V
IN
= 2.5V
O
vs JUNCTION TEMPERATURE (PWM MODE)
= 5V I
= 3.3V
V
0
O
V
O
0.010
0.010
O
= 1A
V
= 0.8V
V
= 1.2V
IN
IN
O
= 3.3V I
= 3.3V, V
V
= 1.0V
V
O
V
O
T
I
4
O
V
= 1.2V
O
A
= 0.8V
I
O
V
O
= 1.5V
(°C)
(A)
50
O
= 1.5V
O
(A)
O
O
= 1.8V
= 0A
O
(PFM/PWM MODE)
(PFM/PWM MODE)
V
0.100
0.100
= 1.8V, I
IN
V
= 3.3V I
V
IN
IN
= 5V I
100
= 5V
V
V
O
IN
O
O
= 1A with component values shown on page 1 at room ambient temperature, unless otherwise
= 3.3V
O
= 1.0V
= 1A
= 0A
1.000
1.000
150
EL7531
100
90
80
70
60
50
40
30
20
10
100
FIGURE 6. LOAD REGULATIONS (PWM MODE)
0.001
0
-0.1%
-0.2%
-0.3%
-0.4%
-0.5%
90
80
70
60
50
40
30
20
10
0.1%
0.0%
FIGURE 2. EFFICIENCY vs I
0
0.001
FIGURE 4. EFFICIENCY vs I
V
0
O
= 1.0V
V
V
O
V
V
V
O
O
O
O
= 1.2V
V
V
= 2.5V
= 1.5V
= 1.5V
O
= 1.8V
V
O
0.2
O
= 1.8V
0.010
= 2.5V
0.010
= 3.3V
0.4
I
V
V
O
O
I
IN
O
I
(A)
O
= 0.8V
(A)
= 5V
(A)
V
O
O
O
0.100
0.100
0.6
V
= 0.8V
(PWM MODE)
(PWM MODE)
V
O
V
O
IN
= 1.0V
= 1.2V
V
= 3.3V
IN
V
IN
= 3.3V
0.8
= 5V
July 13, 2006
1.000
1.000
FN7428.9
1