OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

MP1493DS-LF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
MP1493 – 3A, 4.2V-16V INPUT, FAST TRANSIENT SYNCHRONOUS STEP-DOWN CONVERTER
MP1493 Rev. 1.11 www.MonolithicPower.com 4
9/21/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
PIN FUNCTIONS
SOIC-8
Pin #
Name Description
1 IN
Supply Voltage. The MP1493 operates from a +4.2V to +16V input rail. C1 is needed to
decouple the input rail. Use wide PCB traces and multiple vias to make the connection.
2 GND
System Ground. This pin is the reference ground of the regulated output voltage. For this
reason care must be taken in PCB layout.
3 SW Switch Output. Use wide PCB traces and multiple vias to make the connection.
4 BST
Bootstrap. A capacitor connected between SW and BST pins is required to form a floating
supply across the high-side switch driver.
5 BYP
Internal LDO output. Decouple with a 1µF ceramic capacitor. X7R or X5R grade dielectric
ceramic capacitors are recommended for their stable temperature characteristics.
6 EN
EN=1 to enable the MP1493. For automatic start-up, connect EN pin to VIN with a pull-up
resistor.
7 FB
Feedback. An external resistor divider from the output to GND, tapped to the FB pin, sets
the output voltage.
8 FREQ
Switching frequency setting pin during CCM operation. Connect a resistor R
freq
to IN to set
the switching frequency. An optional 1nF decoupling capacitor can be added to improve any
switching frequency jitter that may be present.
MP1493 – 3A, 4.2V-16V INPUT, FAST TRANSIENT SYNCHRONOUS STEP-DOWN CONVERTER
MP1493 Rev. 1.11 www.MonolithicPower.com 5
9/21/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
=12V, V
OUT
=1.2V, L=2.2µH, T
A
=+25°C, unless otherwise noted.
Line Regulation Load Regulation
Frequency vs. Temperature
I
OUT
(A)
I
OUT
(A)
I
OUT
(A)
60
65
70
75
80
85
90
95
100
0.01 0.1 1 10
-1.2
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
1.2
3 5 7 9 11 13 15 16
V
IN
(V)
-1.00
-0.80
-0.60
-0.40
-0.20
0.00
0.20
0.40
0.60
0.80
1.00
0 0.5 1 1.5 2 2.5 3
0
5
10
15
20
25
30
0 0.5 1 1.5 2 2.5 3
400
405
410
415
420
425
430
435
440
445
450
-40 -20 0 20 40 60 80 100 120 140
F
SW
(kHZ)
V
IN
=8V
V
IN
=12V
I
OUT
=3A
V
IN
=12V
No air flow
V
OUT
VS. I
OUT
V
OUT
=1.2V, Freq=500kHz
I
OUT
(A)
V
OUT
(V)
1.1
1.12
1.14
1.16
1.18
1.2
1.22
1.24
0.01 0.1 1 10
V
IN
=16V
V
IN
=12V
V
IN
=5V
V
IN
=8V
MP1493 – 3A, 4.2V-16V INPUT, FAST TRANSIENT SYNCHRONOUS STEP-DOWN CONVERTER
MP1493 Rev. 1.11 www.MonolithicPower.com 6
9/21/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
V
IN
=12V, V
OUT
=1.2V, L=2.2µH, T
A
=+25°C, unless otherwise noted.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

MP1493DS-LF

Mfr. #:
Buy MP1493DS-LF
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Switching Voltage Regulators 3A 4.2-16V Fast Trns Synch Step-Down
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet