MAX1572ETC250+ Maxim Integrated Products, MAX1572ETC250+ Datasheet - Page 5

• Manufacturer Part Number: MAX1572ETC250+
• Description: IC DC-DC STEP-DN CONV 12TQFN
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1572ETC250+

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 2.5V
• Current - Output: 800mA
• Frequency - Switching: 2MHz
• Voltage - Input: 2.6 ~ 5.5 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 12-TQFN Exposed Pad
• Power - Output: 1.35W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(V
BATT
= 3.6V, V
RIPPLE
V
RESET
V
V
V
V
OUT
OUT
EN2
I
LX
60
50
40
30
20
10
I
IN
L
0
OUT
2.0
LIGHT-LOAD SWITCHING WAVEFORMS
INPUT CURRENT vs. INPUT VOLTAGE
_______________________________________________________________________________________
= 1.5V, EN1 = GND, EN2 = BATT, T
2.5
RESET WAVEFORM
3.0
INPUT VOLTAGE (V)
WITH NO LOAD
100ms/div
3.5
2µs/div
4.0
Step-Down Converter with RESET
I
LOAD
4.5
= 20mA
MAX1572 toc09
MAX1572 toc11
5.0
Typical Operating Characteristics (continued)
5.5
800mA, 2MHz, PWM DC-to-DC
20mV/div
1V/div
1V/div
500mA/div
100mA/div
2V/div
2V/div
A
= +25°C, unless otherwise noted.)
RIPPLE
I
V
V
V
LOAD
V
OUT
OUT
V
EN2
OUT
I
LX
IN
I
L
LOAD TRANSIENT, FORCED-PWM MODE
HEAVY-LOAD SWITCHING WAVEFORMS
SOFT-START/SHUTDOWN WAVEFORMS
200ns/div
200µs/div
4µs/div
I
LOAD
= 20mA TO 550mA
I
LOAD
= 500mA
MAX1572 toc10
MAX1572 toc12
MAX1572 toc08
1V/div
10mV/div
100mA/div
500mA/div
500mA/div
2V/div
100mV/div
2V/div
5