MAX8640YEXT25+T Maxim Integrated Products, MAX8640YEXT25+T Datasheet - Page 3

• Manufacturer Part Number: MAX8640YEXT25+T
• Description: IC DC-DC CONV 2.5V SC70-6
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX8640YEXT25+T

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 2.5V
• Current - Output: 500mA
• Frequency - Switching: 2MHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SC-70-6, SC-88, SOT-363
• Power - Output: 245mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(V
IN
100
90
80
70
60
50
40
30
20
10
0
= 3.6V, V
0.1
MAX8640YEXT18
EFFICIENCY vs. LOAD CURRENT
OUT
1
LOAD CURRENT (mA)
1.8V OUTPUT
= 1.5V, MAX8640Z, L = Murata LQH32CN series, T
1.55
1.50
1.45
1.40
1.35
1.30
V
_______________________________________________________________________________________
OUT
V
I
LX
LX
10
MEDIUM-LOAD SWITCHING WAVEFORMS
0
OUTPUT VOLTAGE vs. LOAD CURRENT
Tiny 500mA, 4MHz/2MHz Synchronous
100
100
(VOLTAGE POSITIONING)
LOAD CURRENT (mA)
(I
OUT
200
200ns/div
1000
= 40mA)
300
MAX8640ZEXT15
35
30
25
20
15
10
5
MAX8640Y/Z toc06
400
2.7
Step-Down DC-DC Converters
MAX8640YEXT18
MAX8640ZEXT15
3.1
500
NO-LOAD SUPPLY CURRENT
20mV/div
(AC-COUPLED)
2V/div
0V
200mA/div
0mA
vs. SUPPLY VOLTAGE
3.5
SUPPLY VOLTAGE (V)
3.9
A
4.3
Typical Operating Characteristics
= +25°C, unless otherwise noted.)
4.7
V
V
OUT
V
OUT
V
I
I
LX
LX
LX
LX
5.1
HEAVY-LOAD SWITCHING WAVEFORMS
LIGHT-LOAD SWITCHING WAVEFORMS
5.5
(I
(I
OUT
OUT
200ns/div
0.1
10μs/div
10
= 300mA)
1
= 1mA)
0
100
SWITCHING FREQUENCY
MAX8640Y/Z toc07
MAX8640Y/Z toc05
vs. LOAD CURRENT
LOAD CURRENT (mA)
MAX8640YEXT18
MAX8640ZEXT15
200
20mV/div
(AC-COUPLED)
2V/div
0V
200mA/div
0mA
20mV/div
(AC-COUPLED)
2V/div
200mA/div
300
400
500
3