TM
MP2109 – DUAL 1.2MHz 800mA SYNCHRONOUS STEP-DOWN CONVERTER
PACKAGE REFERENCE
TOP VIEW
EN1
FB1
IN2
GND2
SW2
1
2
3
4
5
10
9
8
7
6
SW1
GND1
IN1
FB2
EN2
ABSOLUTE MAXIMUM RATINGS
(1)
V
IN1/IN2
to GND ............................ –0.3V to +6.5V
V
SW1/SW2
to GND................... –0.3V to V
IN
+ 0.3V
V
FB1/FB2
, V
EN1/EN2
to GND ............. –0.3V to +6.5V
Junction Temperature.............................+150°C
Lead Temperature ..................................+260°C
Storage Temperature .............–65°C to +150°C
Recommended Operating Conditions
(2)
EXPOSED PAD
ON BACKSIDE
MP2109_PD02_QFN10
Supply Voltage V
IN1/IN2
....................... 2.5V to 6V
Output Voltage V
OUT1/OUT2
.................. 0.6V to 6V
Operating Temperature .............–40°C to +85°C
Thermal Resistance
Temperature
–40°C to +85°C
(3)
Part Number*
MP2109DQ
*
Package
QFN10
(3mm x 3mm)
QFN10 (3mm x 3mm) ............. 50 ...... 12...
°C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
3) Measured on approximately 1” square of 1 oz copper.
θ
JA
θ
JC
For Tape & Reel, add suffix –Z (eg. MP2109DQ–Z)
For Lead Free, add suffix –LF (eg. MP2109DQ–LF–Z)
ELECTRICAL CHARACTERISTICS
(4)
V
IN1/IN2
= V
EN1/EN2
= 3.6V, T
A
= +25°C, unless otherwise noted.
Parameter
Symbol Condition
Each Converter Supply Current
V
EN1/EN2
= V
IN1/IN2
, V
FB1/FB2
= 0.65V
Each Converter Shutdown
V
EN1/EN2
= 0V, V
IN1/IN2
= 6V
Current
IN Under Voltage Lockout
Rising Edge
Threshold
IN Under Voltage Lockout
Hysteresis
T
A
= +25°C
Regulated FB Voltage
V
FB
–40°C
≤
T
A
≤
+85°C
FB Input Bias Current
I
FB
V
FB1/FB2
= 0.65V
PFET On Resistance
I
SW1/SW2
= 100mA
NFET On Resistance
I
SW1/SW2
= –100mA
V
EN1/EN2
= 0V, V
IN1/IN2
= 6V
SW Leakage Current
V
SW1/SW2
= 0V or 6V
Duty Cycle = 100%,
PFET Current Limit
Current Pulse Width < 1ms
Oscillator Frequency
f
OSC
Thermal Shutdown Trip
Threshold
EN Enable Threshold
–40°C
≤
T
A
≤
+85°C
EN Input Current
V
EN1/EN2
= 0V to 6V
Min
Typ
440
0.10
2.15
2.30
55
0.588
0.582
–50
0.600
0.600
0.5
0.42
0.26
0.612
0.618
+50
Max
600
1
2.40
Units
µA
µA
V
mV
V
nA
Ω
Ω
µA
A
MHz
°C
1.5
+1
V
µA
–2
0.9
0.99
1.3
1.24
150
0.3
–1
0.96
+2
1.8
1.49
Notes:
4) Production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.
MP2109 Rev.1.3
2/21/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
2
MPS [ MONOLITHIC POWER SYSTEMS ]
