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MAX20002ATPB/V+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19
General Description
The MAX20002/MAX20003 are small, synchronous
buck converters with integrated high-side and low-side
MOSFETs. Each device is designed to deliver up to 2A/3A
with input voltages from 3.5V to 36V, while using only
15µA quiescent current at no load. Voltage quality can be
monitored by observing the PGOOD signal. The devices
can operate in dropout by running at 98% duty cycle,
making them ideal for automotive applications.
The devices offer fixed output voltages of 5V/3.3V, along
with the ability to program the output voltage between 1V
to 10V. Frequency can be programmed using a resistor
to ground on the FOSC pin from 220kHz to 2.2MHz. The
devices offer a forced fixed-frequency mode and skip
mode with ultra-low quiescent current of 15µA. They have
a pin that can be programmed to turn on/off the spread
spectrum, further helping systems designers with better
EMC management.
The MAX20002/MAX20003 are available in a small 5mm x
5mm 20-pin TQFN package with exposed pad and use very
few external components.
Applications
● Point-of-Load Applications in Automotive
● Distributed DC Power Systems
● Navigation and Radio Head Units
Benets and Features
● Synchronous DC-DC Converter with Integrated FETs
• MAX20002 = 2A
• MAX20003 = 3A
• 15µA Quiescent Current When in Standby Mode
● Small Solution Size Saves Space
• 220kHz to 2.2MHz Adjustable Frequency
• Programmable 1V to 10V Output for the Buck or
Fixed 5V/3.3V Options Available
• Fixed 8ms Internal Soft-Start
• Fixed Output Voltage with ±2% Output Accuracy
(5V/3.3V) or Externally Resistor Adjustable (1V to
10V) with ±1% FB Accuracy
● PGOOD Output and High-Voltage EN Input Simplify
Power Sequencing
● Protection Features and Operating Range Ideal for
Automotive Applications
• Operating V
IN
Range of 3.5V to 36V
• 42V Load-Dump Protection
• 99% Duty-Cycle Operation with Low Dropout
• -40°C to +125°C Automotive Temperature Range
• AEC-Q100 Qualied
• Fast and Accurate Overvoltage Protection
Enables Fast Recovery from Automotive Transients
(MAX20002C/MAX20003C)
Ordering Information appears at end of data sheet.
19-7311; Rev 8; 9/16
MAX20002/MAX20003 36V, 220kHz to 2.2MHz, 2A/3A Fully
Integrated Step-Down Converters
with 15μA Operating Current
EVALUATION KIT AVAILABLE
MAX20002
MAX20003
FOSC
OUT
FB
COMP
BIAS
BST
PGND
PGND
SPS
PGOOD
AGND
EN
SUPSW
SUPSW
SUP
FSYNC
N.C
.
LX
LX
LX
EP
12kΩ
0.1µF
2 x 22µF
2.2µH
2.2µF
4.7µF
20.0kΩ
1,000pF
2.
2µF
V
OUT
= 3.3V/5V
AT 3A
, 2
.
2MHz
V
BAT
Typical Application Circuit/Block Diagram
www.maximintegrated.com
Maxim Integrated
│
2
MAX20002/MAX20003 36V, 220kHz to 2.2MHz, 2A/3A Fully
Integrated Step-Down Converters
with 15μA Operating Current
SUP, SUPSW, LX, EN to PGND ...........................-0.3V to +42V
SUP to SUPSW ....................................................-0.3V to +0.3V
BIAS to AGND .........................................................-0.3V to +6V
SPS, FOSC, COMP to AGND ................-0.3V to (V
BIAS
+ 0.3V)
FSYNC, PGOOD, FB to AGND ..............-0.3V to (V
BIAS
+ 0.3V)
OUT to PGND .......................................................-0.3V to +12V
BST to LX ................................................................-0.3V to +6V
AGND to PGND ....................................................-0.3V to +0.3V
Output Short-Circuit Duration .................................... Continuous
Continuous Power Dissipation (T
A
= +70°C)
20-Pin TQFN (derate 33.3mW/°C above +70°C) ..2666.7mW
Operating Temperature Range ......................... -40°C to +125°C
Junction Temperature ..................................................... +150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) ....................................... +260°C
TQFN
Junction-to-Ambient Thermal Resistance (θ
JA
) ..........30°C/W
Junction-to-Case Thermal Resistance (θ
JC
) .................2°C/W
(Note 1)
Electrical Characteristics
(V
SUP
= V
SUPSW
= 14V, V
EN
= 14V, L1 = 2.2µH, C
IN
= 4.7µF, C
OUT
= 44µF, C
BIAS
= 2.2µF, C
BST
= 0.1µF, R
FOSC
= 12kΩ, T
A
= T
J
=
-40°C to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage
V
SUP
,
V
SUPSW
3.5 36 V
Load-Dump Event Supply
Voltage
V
SUP_LD
t
LD
< 1s 42 V
Supply Current
I
SUP_
STANDBY
Standby mode, no load, V
OUT
= 3.3V,
V
FSYNC
= 0V
15 30 µA
Supply Current (5V)
I
SUP_
STANDBY
Standby mode, no load, V
OUT
= 5V,
V
FSYNC
= 0V
20 35 µA
Shutdown Supply Current I
SHDN
V
EN
= 0V 5 10 µA
BIAS Regulator Voltage V
BIAS
V
SUP
= V
SUPSW
= 6V to 42V,
I
BIAS
= 0 to 10mA
4.7 5 5.4 V
BIAS Undervoltage Lockout V
UVBIAS
V
BIAS
rising 2.9 3.15 3.4 V
BIAS Undervoltage-Lockout
Hysteresis
400 500 mV
Thermal-Shutdown Threshold 175 °C
Thermal-Shutdown Threshold
Hysteresis
15 °C
OUTPUT VOLTAGE
PWM-Mode Output Voltage
(Note 2)
V
OUT_5V
V
FB
= V
BIAS
, 6V < V
SUPSW
< 36V,
xed-frequency mode
4.9 5 5.1
V
V
OUT_3.3V
3.23 3.3 3.37
Skip-Mode Output Voltage
(Note 3)
V
OUT_
SKIP_5V
No load, V
FB
= V
BIAS
, skip mode
4.9 5 5.15
V
V
OUT_
SKIP_3.3V
3.23 3.3 3.4
www.maximintegrated.com
Maxim Integrated
│
3
MAX20002/MAX20003 36V, 220kHz to 2.2MHz, 2A/3A Fully
Integrated Step-Down Converters
with 15μA Operating Current
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Package Thermal Characteristics
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19

MAX20002ATPB/V+

Mfr. #:
Buy MAX20002ATPB/V+
Manufacturer:
Maxim Integrated
Description:
Switching Voltage Regulators 36V, 220kHz to 2.2MHz, 2A Step-Down Converter with 15uA Operating Current
Lifecycle:
New from this manufacturer.
Delivery:
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