mEZD71203A Series
5V - 16V Input, 3A, DC/DC Power Supply
FEATURES
5V to 16V Wide Operating Input
3A Load Current
Hiccup Short-Circuit Protection
Over-/Under-Voltage Protection
Over-Current Protection
Over-Temperature Protection
Open Design Files and BOM
ORDERING INFORMATION
Part Number
Input Voltage
(V)
MEZD71203A-X
5 - 16
Output Voltage
(V)
1, 1.2, 1.5, 1.8,
2.5, 3.3
Output Current
(A)
3
Output Voltage Options
Manufacture Yourself Available
A = 1.0V
D = 1.8V
Design Files Available for Manufacture
B = 1.2V
E = 2.5V
C = 1.5V
F = 3.3V
Power Derating
VIN = 12V, VOUT = 3.3V
mEZD713xx FAMILY PRODUCTS
120
Natural Convection
Output Power (%)
100
VOUT=3.3V
80
60
Input Voltage
(V)
mEZD71201A-X
4.5 - 24
mEZD71202A-X
4.5 - 24
mEZD71203A-X
5 - 16
40
Output Voltage
(V)
1, 1.2, 1.5, 1.8,
2.5, 3.3, 5
1, 1.2, 1.5, 1.8,
2.5, 3.3, 5
1, 1.2, 1.5, 1.8,
2.5, 3.3
mEZD71210A-X
4.5 - 17
ELECTRICAL CHARACTERISTICS
20
Input Voltage Range
0
25
45
65
85
105
Ambient Temperature ( OC)
125
VIN = 12V, VOUT = 1V - 3.3V
95
90
85
Output Current
(A)
1.2
2
3
1.0
VIN_MIN higher than VOUT by 1V
Output Voltage Set
Accuracy
Efficiency vs. Load Current
Efficiency (%)
Part Number
10
5 to 16V
±2.5% (Typ.)
Output Voltage Ripple
VIN = 12V, VOUT = 3.3V, Full Load
30.4mV
Line Regulation
VIN from MIN to MAX, VOUT = 3.3V
±1% (Typ.)
Load Regulation
IOUT from MIN to MAX, VOUT = 3.3V
±1% (Typ.)
Switching Frequency
Typical Switching Frequency
400kHz
Short-Circuit Protection
Short Output to Ground
Hiccup Mode
80
Operating Temperature
Range
VOUT=1.0V
75
VOUT=1.2V
70
VOUT=1.5V
65
VOUT=2.5V
VOUT=1.8V
VOUT=3.3V
60
0
0.5
1
1.5
2
Load Current (A)
2.5
3
-40 to 85°C
Over-Temperature
Protection
OTP
150°C
Rise Time
VOUT from 0% to 90%
0.8ms (Typ.)
Calculated MTBF
MIL-HDBK-217F
4185x103 hrs
NOTE: All electrical characteristics are tested under 25°C ambient temperature, VIN = 12V unless otherwise noted.
mEZD71203A Rev. 1.0
www.MonolithicPower.com
3/6/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2017 MPS. All Rights Reserved.
1
mEZD71203A Series
5V - 16V Input, 3A DC/DC Power Supply
DO-IT-YOURSELF SCHEMATIC
C1
VIN
R1
C2
VIN
L1
BST
VOUT
SW
EN
C5
C3
VCC
C4
VOUT
MPDIY71203A
ADD
AGND
PGND
GND
Inside mEZD71203A-X
BILL OF MATERIALS
Item
Qty
RefDes
Value
Description
Package
Manufacturer
Manufacturer P/N
1
1
C1
0.22µF
Ceramic Cap., 16V, X5R
0402
WE
885012105017
2
1
C2
4.7µF
Ceramic Cap., 50V, X7R
1206
WE
885012208094
3
2
C3, C4
47µF
Ceramic Cap., 10V, X5R
0805
WE
885012107011
4
1
C5
1µF
Ceramic Cap., 10V, X5R
0402
WE
885012105012
5
1
L1
3.3µH
Idc 4.1A, DCR 38mΩ
5.5x5.2mm
WE
74437336033
6
1
R1
499kΩ
Film Res., 5%
0402
Yageo
RC0402JR-07499KL
7
1
P1
3-Pin
3-Pin Male Connector, Right
Angle
Bulk
TE-Connectivity
571-3-644457-3
8
1
U1
MPDIY71203A
Synchronous Step-Down
Converter
QFN-16
MPS
MPDIY71203A
PRODUCT PACKAGE AND DIMENSIONS
Pin
Designation
Function
1
VIN
Input Voltage
2
GND
Power Ground
3
VOUT
Output Voltage
BOTTOM VIEW
TOP VIEW
NOTE:
Contact factory for different sizes of the boards (Quantity >2k).
For more information, Gerber files, and PCB layout, please contact
mEZsupport@monolithicpower.com
SIDE VIEW
mEZD71203A Rev. 1.0
www.MonolithicPower.com
3/6/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2017 MPS. All Rights Reserved.
2