MP1469
The Future of Analog IC Technology
High-Efficiency, 1.5A, 16V, 500kHz
Synchronous, Step-Down Converter
In 6 Pin SOT 23
FEATURES
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Wide 4.7V-to-16V Operating Input Range
255mΩ/160mΩ Low-R
DS(ON)
Internal Power
MOSFETs
Proprietary Switching-Loss–Reduction
Technique
High-Efficiency Synchronous-Mode
Operation
Fixed 500kHz Switching Frequency
AAM Power-Save Mode for High Efficiency
at Light Load
Internal Soft-Start
Over-Current Protection and Hiccup
Thermal Shutdown
Output Adjustable from 0.8V
Available in a 6-pin TSOT-23 package
GameStations
Digital Set-Top Boxes
Flat-Panel Television and Monitors
General Purposes
DESCRIPTION
The MP1469 is a high-frequency, synchronous,
rectified, step-down, switch-mode converter
with internal power MOSFETs. It offers a very
compact solution to achieve a 1.5A continuous
output current over a wide input supply range,
with excellent load and line regulation. The
MP1469 has synchronous-mode operation for
higher efficiency over the output current-load
range.
Current-mode operation provides fast transient
response and eases loop stabilization.
Protection
features
include
protection and thermal shutdown.
over-current
The MP1469 requires a minimal number of
readily-available,
standard,
external
components and is available in a space-saving
6-pin TSOT23 package.
APPLICATIONS
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
1
4
3.3V/1.5A
R1
40.2k
R2
13k
VIN
IN
BST
U1
100
95
90
GND
MP1469
SW 3
5
FB 6
GND
2
R3
59k
VOUT
85
80
75
70
65
60
55
50
0.01
0.1
1
10
EN
EN
MP1469 Rev. 1.01
8/26/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
1
MP1469 – SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
ORDERING INFORMATION
Part Number*
MP1469GJ
Package
TSOT23-6
Top Marking
ADM
* For Tape & Reel, add suffix –Z (e.g. MP1469GJ–Z);
PACKAGE REFERENCE
TOP VIEW
ABSOLUTE MAXIMUM RATINGS
(1)
V
IN
..................................................-0.3V to 17V
V
SW
......................................................................
-0.3V (-5V for <10ns) to 17V (19V for <10ns)
V
BS
......................................................... V
SW
+6V
All Other Pins ...................................–0.3V to 6V
(2)
Continuous Power Dissipation (T
A
= +25°C)
........................................................... 0.57W
Junction Temperature ...............................150°C
Lead Temperature ....................................260°C
Storage Temperature................. -65°C to 150°C
Thermal Resistance
(4)
θ
JA
θ
JC
TSOT-23-6............................. 220 .... 110.. °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature T
J
(MAX), the junction-to-
ambient thermal resistance
θ
JA
, and the ambient temperature
T
A
. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by P
D
(MAX) = (T
J
(MAX)-T
A
)/θ
JA
. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
Recommended Operating Conditions
(3)
Supply Voltage V
IN
...........................4.7V to 16V
Output Voltage V
OUT
.................... 0.8V to Vin-3V
Operating Junction Temp. (T
J
). -40°C to +125°C
MP1469 Rev. 1.01
8/26/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
2
MP1469 – SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
ELECTRICAL CHARACTERISTICS
(5)
V
IN
= 12V, T
A
= 25°C, unless otherwise noted.
Parameter
Supply Current (Shutdown)
Supply Current (Quiescent)
HS Switch-On Resistance
LS Switch-On Resistance
Switch Leakage
Current Limit
(5)
AAM Peak Current
Oscillator Frequency
Maximum Duty Cycle
Minimum On Time
(5)
Feedback Voltage
EN Rising Threshold
EN Falling Threshold
EN Input Current
V
IN
Under-Voltage Lockout
Threshold—Rising
V
IN
Under-Voltage Lockout
Threshold—Hysteresis
Soft-Start Period
Thermal Shutdown
(5)
Thermal Hysteresis
(5)
Notes:
5) Guaranteed by design.
Symbol
I
IN
I
q
Condition
V
EN
= 0V
V
EN
= 2V, V
FB
= 1V
V
BST-SW
=5V
Vcc=5V
V
EN
= 0V, V
SW
=12V
Min
Typ
0.83
255
160
Max
1
Units
μA
mA
mΩ
mΩ
μA
A
A
kHz
%
ns
mV
V
V
μA
μA
HS
RDS-ON
LS
RDS-ON
SW
LKG
I
LIMIT
I
AAM_PEAK
f
SW
V
FB
=0.75V
D
MAX
V
FB
=700mV
t
ON_MIN
V
FB
V
EN_RISING
V
EN_FALLING
I
EN
INUV
Vth
INUV
HYS
t
SS
V
EN
=2V
V
EN
=0
1
2.5
400
88
776
1.4
1.23
3.0
0.5
490
92
90
800
1.5
1.32
1.6
0
3.85
4.2
340
1
150
20
4.55
580
824
1.6
1.41
V
mV
ms
°C
°C
MP1469 Rev. 1.01
8/26/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
3
MP1469 – SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
TYPICAL CHARACTERISTICS
V
IN
= 12V, V
OUT
= 3.3V, L = 6.5µH, T
A
= +25°C, unless otherwise noted.
100
95
100
95
90
85
80
75
70
65
60
55
0.1
1
LOAD CURRENT (A)
10
50
0.01
0.1
1
LOAD CURRENT (A)
10
100
95
90
85
80
75
70
65
60
55
50
0.01
0.1
1
LOAD CURRENT (A)
10
EFFICIENCY (%)
90
85
80
75
70
65
60
0.01
100
90
80
70
60
50
40
0.01
2
1.5
2
1.5
1
0.5
0
-0.5
-1
-1.5
-2
0
0.3
0.6
0.9
1.2
LOAD CURRENT (A)
1.5
5 6 7 8 9 10 11 12 13 14 15 16
INPUT VOLTAGE (V)
REGULATION (%)
0.1
1
LOAD CURRENT (A)
10
EFFICIENCY (%)
1
0.5
0
-0.5
-1
-1.5
-2
Peak Current vs. Duty Cycle
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
0 10 20 30 40 50 60 70 80 90
DUTY CYCLE (%)
10
5
0
0.0
0.3
0.6
0.9
1.2
LOAD CURRENT (A)
1.5
30
25
20
15
870
860
850
840
830
820
810
800
4
6
8
10
12
14
16
PEAK CURRENT (A)
INPUT VOLTAGE (V)
MP1469 Rev. 1.01
8/26/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
4
MP1469 – SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
TYPICAL CHARACTERISTICS
(continued)
V
IN
= 12V, V
OUT
= 3.3V, L = 6.5µH, T
A
= +25°C, unless otherwise noted.
MP1469 Rev. 1.01
8/26/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
5
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