MAX15035ETL+ Maxim Integrated Products, MAX15035ETL+ Datasheet
MAX15035ETL+
Manufacturer Part Number
MAX15035ETL+
Description
IC REG STEP DOWN 15A 40-TQFN
Manufacturer
Maxim Integrated Products
Type
Step-Down (Buck)r
Datasheet
1.MAX15035ETL.pdf
(26 pages)
Specifications of MAX15035ETL+
Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
1.05V, 1.5V
Current - Output
15A
Voltage - Input
4.5 ~ 26 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
40-TQFN Exposed Pad
Power - Output
2.16W
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Frequency - Switching
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
The MAX15035 pulse-width modulation (PWM) controller
provides high efficiency, excellent transient response,
and high DC-output accuracy. Combined with the inter-
nal low on-resistance MOSFETs, the MAX15035 pro-
vides a highly efficient and compact solution for small
form factor applications that need a high-power density.
Maxim’s proprietary Quick-PWM™ quick-response,
constant on-time PWM control scheme handles wide
input/output voltage ratios (low-duty-cycle applications)
with ease and provides 100ns instant-on response to
load transients while maintaining a relatively constant
switching frequency. The output voltage can be dynam-
ically controlled using the dynamic REFIN, which sup-
ports input voltages between 0V to 2V. The REFIN
adjustability combined with a resistive voltage-divider
on the feedback input allows the MAX15035 to be con-
figured for any output voltage between 0V to 0.9V
The controller senses the current across the synchro-
nous rectifier to achieve a low-cost and highly efficient
valley current-limit protection. External current-limit con-
trol is provided to allow higher current-limit settings for
applications with heatsinks and air flow, or for lower
current applications that need lower current-limit set-
tings to avoid overdesigning the application circuit. The
adjustable current limit provides a high degree of flexi-
bility, allowing thermally compensated protection or
foldback current-limit protection using a voltage-divider
partially derived from the output.
The MAX15035 includes a voltage-controlled soft-start
and soft-shutdown to limit the input surge current, pro-
vide a monotonic power-up into a precharged output,
and provide a predictable soft-start time. The controller
also includes output fault protection—undervoltage and
overvoltage protection—as well as thermal-fault protec-
tion.
The MAX15035 is available in a small 40-pin, 6mm x 6mm,
TQFN package.
19-4123; Rev 0; 5/08
Quick-PWM is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
15A Step-Down Regulator with Internal Switches
Server Computers
GPU Core Supplies
DDR Memory—VDDQ or VTT
Point-of-Load Applications
Step-Down Power Supplies
Storage Power Supplies
________________________________________________________________ Maxim Integrated Products
General Description
Applications
IN
.
o 4.5V to 26V Input Voltage Range
o Fast Transient Response
o Monotonic Power-Up with Precharged Output
o Supports Any Output Capacitor
o Dynamically Adjustable Output Voltage
o Adjustable Valley Current-Limit Protection
o Programmable Switching Frequency
o Overvoltage Protection
o Undervoltage Protection
o Voltage Soft-Start and Soft-Shutdown
o Power-Good Window Comparator
+ Denotes a lead-free package.
* EP = Exposed pad.
MAX15035ETL+
TOP VIEW
No Compensation Required with Polymers/
Stable with Ceramic Output Capacitors Using
External Compensation
0.5% V
Thermal Compensation with NTC
Supports Foldback Current Limit
Tantalum
PART
PGOOD
REFIN
SKIP
N.C.
ILIM
N.C.
N.C.
REF
V
FB
CC
OUT
31
32
33
34
35
36
37
38
39
40
+
30
1
Accuracy Over Line and Load
AGND
EP1
29
2
28
3
Ordering Information
TEMP RANGE
- 40°C to + 85°C
(6mm x 6mm)
EP3
EP2
27
4
THIN QFN
MAX15035
26
5
Pin Configuration
25
6
LX
IN
24 23 22
7
8
9
40 TQFN - E P *
PIN-PACKAGE
10
21
Features
20 IN
19
18
17
16
15
14
13
12
11
IN
IN
N.C.
LX
PGND
PGND
PGND
PGND
PGND
1
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