TM
MP1580 – 2A, 380KHz STEP-DOWN CONVERTER
PACKAGE REFERENCE
TOP VIEW
TOP VIEW
BS
IN
1
2
3
4
8
7
6
5
SYNC
EN
BS
IN
1
2
3
4
8
7
6
5
SYNC
EN
SW
GND
COMP
FB
SW
GND
COMP
FB
MP1580_PD01-SOIC8
MP1580_PD02-PDIP8
Part Number*
Package
Temperature
–40°C to +125°C
Part Number**
Package
PDIP8
Temperature
MP1580HS
SOIC8
MP1580HP
–40°C to +125°C
For Tape & Reel, add suffix –Z (eg. MP1580HS–Z)
For Lead Free, add suffix –LF (eg. MP1580HS –LF–Z)
** For Tape & Reel, add suffix –Z (eg. MP1580HP–Z)
*
For Lead Free, add suffix –LF (eg. MP1580HP –LF–Z)
ABSOLUTE MAXIMUM RATINGS (1)
Supply Voltage (VIN)..................................... 27V
Switch Voltage (VSW).................. –1V to VIN + 1V
Bootstrap Voltage (VBS) .......................VSW + 6V
Feedback Voltage (VFB) .................–0.3V to +6V
Enable/UVLO Voltage (VEN)...........–0.3V to +6V
Comp Voltage (VCOMP) ...................–0.3V to +6V
Sync Voltage (VSYNC)......................–0.3V to +6V
Junction Temperature............................ +150°C
Lead Temperature ................................. +260°C
Storage Temperature.............. –65°C to +150°C
Recommended Operating Conditions (2)
Input Voltage (VIN) ......................... 4.75V to 25V
Operating Temperature...............–40°C to +125°C
Thermal Resistance (3)
θJA
θJC
SOIC8....................................105..... 50... °C/W
PDIP8 .....................................95...... 55... °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.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
4.75V ≤ VIN ≤ 25V
VCOMP < 2V
Feedback Voltage
1.198
1.222
1.246
V
Upper Switch-On Resistance
Lower Switch-On Resistance
Upper Switch Leakage
Current Limit (4)
0.18
10
Ω
Ω
VEN = 0V, VSW = 0V
0
10
µA
A
2.4
3.0
3.6
Current Limit Gain.
Output Current to Comp Pin Voltage
1.95
A/V
Error Amplifier Voltage Gain
Error Amplifier Transconductance
Oscillator Frequency
400
770
380
35
V/V
µA/V
KHz
KHz
KHz
500
342
20
1100
418
54
∆IC = ±10µA
Short Circuit Frequency
Sync Frequency
VFB = 0V
Sync Drive 0V to 2.7V
445
600
MP1580 Rev. 3.0
12/5/2005
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
2
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