MAX1639ESE Maxim Integrated Products, MAX1639ESE Datasheet - Page 4
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MAX1639ESE
Manufacturer Part Number
MAX1639ESE
Description
DC/DC Switching Controllers
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX1639ESE.pdf
(13 pages)
Specifications of MAX1639ESE
Number Of Outputs
1
Output Voltage
1.1 V to 4.5 V
Input Voltage
4.5 V to 5.5 V
Mounting Style
SMD/SMT
Package / Case
SOIC-16
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MAX1639ESE
Manufacturer:
MAXIM
Quantity:
9 447
Part Number:
MAX1639ESE
Manufacturer:
MAXIM/美信
Quantity:
20 000
Company:
Part Number:
MAX1639ESE+
Manufacturer:
Maxim Integrated Products
Quantity:
135
Company:
Part Number:
MAX1639ESE+
Manufacturer:
NS
Quantity:
126
Part Number:
MAX1639ESE+
Manufacturer:
MAXIM/美信
Quantity:
20 000
High-Speed Step-Down Controller with
Synchronous Rectification for CPU Power
4
(T
__________________________________________Typical Operating Characteristics
A
A
B
C
A
B
= +25°C, using the MAX1639 evaluation kit, unless otherwise noted.)
_______________________________________________________________________________________
V
A: V
B: INDUCTOR CURRENT, 2A/div
C: LX, 5V/div
V
A: V
B: INDUCTOR CURRENT, 5A/div
IN
IN
= 5V, V
OUT
= 5V, V
OUT
LOAD-TRANSIENT RESPONSE
, 20mV/div
, 100mV/div, AC COUPLED
SWITCHING WAVEFORMS
OUT
OUT
= 2.5V, LOAD = 0A
= 2.5V, LOAD = 8A
(V
OUT
10µs/div
1µs/div
= 2.5V)
0
100
90
80
70
60
50
A
0.1
B
A: V
B: INDUCTOR CURRENT, 5A/div
EFFICIENCY vs. OUTPUT CURRENT
OUT
FOLDBACK CURRENT LIMIT
= 0.5V/div
(V
OUT
OUTPUT CURRENT (A)
3.5V
= 2.5V, NOMINAL)
10µs/div
1
1.8V
2.5V
10
100
95
90
85
80
75
70
65
60
55
50
A
B
0
A: INDUCTOR CURRENT, 2A/div
B: V
OUT
vs. SWITCHING FREQUENCY
200
= 1V/div
MAXIMUM DUTY CYCLE
SWITCHING FREQUENCY (kHz)
STARTUP WAVEFORMS
400
400µs/div
600
800
1000 1200