MAX1842EEE+ Maxim Integrated Products, MAX1842EEE+ Datasheet - Page 6

• Manufacturer Part Number: MAX1842EEE+
• Description: IC BUCK SYNC FIX/ADJ 1A 16QSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1842EEE+

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.5V, 1.8V, 2.5V, Adj
• Current - Output: 1A
• Frequency - Switching: 1MHz
• Voltage - Input: 3 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Power - Output: 1W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1A/2.7A, 1MHz, Step-Down Regulators with
Synchronous Rectification and Internal Switches
(Circuit of Figure 1, T
6
_______________________________________________________________________________________
I
OUT
= 1A, V
LINE-TRANSIENT RESPONSE
STARTUP AND SHUTDOWN
A
= +25°C, unless otherwise noted.)
OUT
= 1.5V, R
MAX1742
MAX1742
20μs/div
1ms/div
TOFF
= 100kΩ, L = 6μH
MAX1742 toc08
MAX1742 toc06
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0A
0V
0V
0V
Typical Operating Characteristics (continued)
0
0V
V
2V/div
V
20mV/div
AC-COUPLED
INPUT
OUTPUT
0
I
1A/div
V
5V/div
V
2V/div
V
1V/div
INPUT
SS
SHDN
OUTPUT
50
100 150 200
OFF-TIME vs. R
R
TOFF
250 300 350
(kΩ)
TOFF
400
500
450
400
350
300
250
200
150
100
50
0
450
0
500
LOAD-TRANSIENT RESPONSE
1
vs. SUPPLY VOLTAGE
SUPPLY CURRENT
2
MAX1742
10μs/div
V
SHUTDOWN
IN
3
(V)
4
NO LOAD
MAX1742 toc07
MAX1742 toc09
5
6
0V
100
90
80
70
60
50
40
30
20
10
0
V
AC-COUPLED,
50mV/div
I
0.5A/div
L
OUTPUT