B340L MPS [Monolithic Power Systems], B340L Datasheet - Page 2

• Manufacturer Part Number: B340L
• Description: 2A, 32V, 330KHz Step-Down Converter
• Manufacturer: MPS [Monolithic Power Systems]

PACKAGE REFERENCE
ELECTRICAL CHARACTERISTICS
V
MP1591 Rev. 2.3
9/27/2006
*
Parameter
Shutdown Supply Current
Supply Current
Feedback Voltage
Error Amplifier Voltage Gain
Error Amplifier Transconductance
High-Side Switch On Resistance
Low-Side Switch On Resistance
High-Side Switch Leakage Current
Current Limit
Current Sense to COMP
Transconductance
Oscillation Frequency
Short Circuit Oscillation Frequency
Maximum Duty Cycle
Minimum Duty Cycle
EN Shutdown Threshold Voltage
Enable Pull-Up Current
EN UVLO Threshold
EN UVLO Threshold Hysteresis
IN
Part Number*
For Tape & Reel, add suffix –Z (eg. MP1591DN–Z)
For RoHS Compliant Packaging, add suffix –LF
(eg. MP1591DN–LF–Z)
MP1591DN
MP1591DS
= 12V, T
CONNECT TO PIN 4
(SOIC8N ONLY)
EXPOSED PAD
ON BACKSIDE
GND
SW
BS
A
IN
(5)
= +25°C, unless otherwise noted.
1
2
3
4
TOP VIEW
Package
(4)
SOIC8E
(4)
SOIC8
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
(4)
8
7
6
5
(4)
–40°C to +85°C
–40°C to +85°C
REF
EN
COMP
FB
Temperature
Symbol Condition
© 2006 MPS. All Rights Reserved.
www.MonolithicPower.com
V
V
V
V
V
V
6.5V ≤ V
∆I
V
V
MP1591 – 2A, 32V, 330KHz STEP-DOWN CONVERTER
EN
EN
EN
FB
FB
FB
EN
EN
C
= ±10µA
= 0V
= 1.0V
= 1.5V
= 0V
= 5V, V
= 0V, V
= 0V
Rising
IN
≤ 32V, V
FB
SW
ABSOLUTE MAXIMUM RATINGS
IN Supply Voltage........................ –0.3V to +34V
SW Voltage............................. –1V to V
BS Voltage ....................V
All Other Pins................................. –0.3V to +6V
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature ..............–65°C to +150°C
Recommended Operating Conditions
Input Voltage ................................... 6.5V to 32V
Operating Temperature .............–40°C to +85°C
Thermal Resistance
SOIC8 (w/ Exposed Pad) ....... 50 ...... 10... °C/W
SOIC8..................................... 90 ...... 45... °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
3) Measured on approximately 1” square of 1 oz copper.
= 1.4V
= 0V
operating conditions.
COMP
< 2V
1.202
Min
500
280
2.5
0.8
2.4
(3)
SW
1.230
Typ
400
700
120
330
250
2.6
1.0
8.5
3.6
3.5
1.2
1.8
20
35
90
0
– 0.3V to V
θ
JA
1.258
1100
Max
380
1.2
4.9
1.6
2.8
35
10
0
θ
JC
IN
SW
+ 0.3V
Units
µA/V
KHz
KHz
V/V
mΩ
A/V
mV
mA
µA
µA
µA
+ 6V
%
%
V
Ω
A
V
V
(2)
(1)
2