MAX8625AETD+T Maxim Integrated Products, MAX8625AETD+T Datasheet - Page 4

• Manufacturer Part Number: MAX8625AETD+T
• Description: IC PWM STEP-UP/DWN REG 14-TDFN
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck), Step-Up (Boost)r

Specifications of MAX8625AETD+T

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 3.3V, 1.25 ~ 4 V
• Current - Output: 800mA
• Frequency - Switching: 1MHz
• Voltage - Input: 2.5 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-TDFN Exposed Pad
• Power - Output: 1.48W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

High-Efficiency, Seamless Transition,
Step-Up/Down DC-DC Converter
(V
4
3.33
3.32
3.31
3.30
3.29
3.28
3.27
100
100
IN
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
_______________________________________________________________________________________
0.1
0.1
3.0
= 3.6V, SKIP = GND, T
OUTPUT VOLTAGE vs. INPUT VOLTAGE
LOAD: 500mA, V
T
A
EFFICIENCY vs. LOAD CURRENT
EFFICIENCY vs. LOAD CURRENT
WITH INTERNAL FB RESISTORS
= +25°C, T
3.5
SKIP AND FPWM MODES
FPWM MODE (FIGURE 3)
1
1
LOAD CURRENT (mA)
LOAD CURRENT (mA)
4.0
INPUT VOLTAGE (V)
A
= -40°C, T
OUT
= 3.3V
4.5
10
10
A
= +85°C
5.0
A
V
100
100
= +25°C, Figure 4, unless otherwise noted.)
V
OUT
V
V
OUT
IN
IN
5.5
= 3.45V
= 2.7V,
= 2.7V,
= 3.3V
3.0V,
3.3V,
3.6V,
4.2V,
3.0V,
3.3V,
3.6V,
4.2V,
5.0V
5.0V
1000
1000
6.0
2.82
2.81
2.80
2.79
2.78
2.77
2.76
2.75
-0.5
-1.0
-1.5
-2.0
100
2.0
1.5
1.0
0.5
95
90
85
80
75
70
65
60
0
3.0
2.0
0.1
OUTPUT VOLTAGE (3.3V INTERNAL FB)
OUTPUT VOLTAGE vs. INPUT VOLTAGE
LOAD: 500mA, V
T
V
T
A
A
300mA
OUT
= +25°C, T
WITH EXTERNAL FB RESISTORS
2.5
= +25°C, T
500mA
3.5
= 3.3V
SKIP-MODE EFFICIENCY
3.0
1
vs. INPUT VOLTAGE
vs. LOAD CURRENT
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
A
4.0
A
= -40°C, T
3.5
= -40°C, T
OUT
= 2.8V
V
LOAD CURRENT = 100mA,
300mA, 500mA
4.5
4.0
OUT
10
A
A
= 3.3V
= +85°C (FIGURE 3)
4.5
= +85°C
Typical Operating Characteristics
5.0
100
5.0
5.5
100mA
5.5
1000
6.0
6.0
0.01
-0.5
-1.0
-1.5
-2.0
100
100
2.0
1.5
1.0
0.5
0.1
90
80
70
60
50
40
30
20
10
10
0
0
1
0.1
0.1
2.0
OUTPUT VOLTAGE (2.8V EXTERNAL FB)
SUPPLY CURRENT vs. INPUT VOLTAGE
V
T
A
OUT
EFFICIENCY vs. LOAD CURRENT
2.5
vs. LOAD CURRENT (FIGURE 3)
= +25°C, T
FPWM MODE
= 2.8V
FPWM MODE (FIGURE 3)
3.0
1
1
LOAD CURRENT (mA)
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
WITH NO LOAD
A
3.5
= -40°C, T
10
10
4.0
NO LOAD V
A
= +85°C
4.5
100
100
OUT
5.0
V
OUT
V
IN
= 3.3V
= 2.7V,
= 2.8V
5.5
3.0V,
3.3V,
3.6V,
4.2V,
5.0V
1000
1000
6.0