TM
MP1580 – 2A, 380KHz STEP-DOWN CONVERTER
PACKAGE REFERENCE
TOP VIEW
BS
IN
SW
GND
1
2
3
4
8
7
6
5
SYNC
EN
COMP
FB
BS
IN
SW
GND
1
2
3
4
TOP VIEW
8
7
6
5
SYNC
EN
COMP
FB
MP1580_PD01-SOIC8
MP1580_PD02-PDIP8
Part Number*
MP1580HS
*
Package
SOIC8
Temperature
–40°C to +125°C
Part Number**
MP1580HP
Package
PDIP8
Temperature
–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 (V
IN
)..................................... 27V
Switch Voltage (V
SW
).................. –1V to V
IN
+ 1V
Bootstrap Voltage (V
BS
) ....................... V
SW
+ 6V
Feedback Voltage (V
FB
) .................–0.3V to +6V
Enable/UVLO Voltage (V
EN
)...........–0.3V to +6V
Comp Voltage (V
COMP
) ...................–0.3V to +6V
Sync Voltage (V
SYNC
)......................–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 (V
IN
) ......................... 4.75V to 25V
Operating Temperature...............–40°C to +125°C
Thermal Resistance
(3)
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.
θ
JA
θ
JC
ELECTRICAL CHARACTERISTICS
V
IN
= 12V, T
A
= +25°C, unless otherwise noted.
Parameter
Feedback Voltage
Upper Switch-On Resistance
Lower Switch-On Resistance
Upper Switch Leakage
Current Limit
(4)
Current Limit Gain.
Output Current to Comp Pin Voltage
Error Amplifier Voltage Gain
Error Amplifier Transconductance
Oscillator Frequency
Short Circuit Frequency
Sync Frequency
MP1580 Rev. 3.0
12/5/2005
Symbol Condition
4.75V
≤
V
IN
≤
25V
V
COMP
< 2V
Min
1.198
Typ
1.222
0.18
10
0
3.0
1.95
400
Max
1.246
Units
V
Ω
Ω
µA
A
A/V
V/V
V
EN
= 0V, V
SW
= 0V
2.4
10
3.6
∆I
C
=
±10µA
V
FB
= 0V
Sync Drive 0V to 2.7V
500
342
20
445
770
380
35
1100
418
54
600
µA/V
KHz
KHz
KHz
2
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