MAX8655ETN+ Maxim Integrated Products, MAX8655ETN+ Datasheet - Page 5

• Manufacturer Part Number: MAX8655ETN+
• Description: IC STEP-DN REG 25A 56-TQFN-EP
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX8655ETN+

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.7 ~ 5.5 V
• Current - Output: 25A
• Frequency - Switching: 200kHz ~ 1MHz
• Voltage - Input: 4.5 ~ 25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 56-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

(T
(T
A
A
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.26
V
= +25°C, unless otherwise noted.)
= +25°C, unless otherwise noted.)
OUT
V
I
LX
IN
0
POWER-UP WAVEFORMS
5
(CIRCUIT OF FIGURE 4)
(CIRCUIT OF FIGURE 4)
LOAD REGULATION
LOAD CURRENT (A)
10
_______________________________________________________________________________________
2ms/div
400
390
380
370
360
350
340
330
320
310
300
Internal MOSFET, Step-Down Regulator
OSCILLATOR FREQUENCY vs. INPUT VOLTAGE
15
8
T
A
V
20
= +25°C
IN
MAX8655 toc06
(CIRCUIT OF FIGURE 4)
13
= 12V
Highly Integrated, 25A, Wide-Input,
T
INPUT VOLTAGE (V)
A
= +85°C
25
V
10V/div
5V/div
1V/div
5A/div
T
POK
A
18
= -40°C
R
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.26
FSYNC
V
V
POK
OUT
V
I
23
LX
IN
5
= 76.8kΩ
12A LOAD
POWER-DOWN WAVEFORMS
28
(CIRCUIT OF FIGURE 4)
(CIRCUIT OF FIGURE 4)
LINE REGULATION
INPUT VOLTAGE (V)
10
200μs/div
Typical Operating Characteristics
Typical Operating Characteristics
15
MAX8655 toc07
STEP-LOAD RESPONSE
(CIRCUIT OF FIGURE 3)
20
10V/div
5V/div
2V/div
10A/div
40μs/div
0.720
0.715
0.710
0.705
0.700
0.695
0.690
0.685
0.680
V
V
POK
V
OUT
I
EN
LX
FB VOLTAGE vs. EXPOSED PAD TEMPERATURE
-40
7.5A LOAD
V
OUT
EXPOSED PAD TEMPERATURE (°C)
MAX8655 toc05
(CIRCUIT OF FIGURE 4)
ENABLE WAVEFORMS
(CIRCUIT OF FIGURE 4)
= 1.2V
0
V
50mV/div
(AC-COUPLED)
0A
I
5A/div
OUT
OUT
2ms/div
40
80
MAX8655 toc08
120
5
5V/div
5V/div
2V/div
10A/div