NCP1588 ON Semiconductor, NCP1588 Datasheet - Page 3

• Manufacturer Part Number: NCP1588
• Description: Low Voltage Synchronous Buck Controller
• Manufacturer: ON Semiconductor

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
PIN FUNCTION DESCRIPTION
Pin No.
ABSOLUTE MAXIMUM RATINGS
MAXIMUM RATINGS
Thermal Resistance, Junction-to-Ambient
Thermal Resistance, Junction-to-Case
NCP1588 Operating Junction Temperature Range
NCP1588 Operating Ambient Temperature Range
Storage Temperature Range
Moisture Sensitivity Level
Main Supply Voltage Input
Bootstrap Supply Voltage Input
Switching Node (Bootstrap Supply Return)
High-Side Driver Output (Top Gate)
Low-Side Driver Output (Bottom Gate)
Feedback, VOS
COMP/EN
PGOOD
10
1
2
3
4
5
6
7
8
9
COMP/EN
PGOOD
Symbol
BOOT
GND
VOS
V
UG
LG
LX
FB
CC
Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the desired
input voltage to this pin (cathode connected to BOOT pin). Connect a capacitor (C
the LX pin. Typical values for C
Switch node pin. This is the reference for the floating top gate driver. Connect this pin to the source of the top
MOSFET.
Top gate MOSFET driver pin. Connect this pin to the gate of the top N-channel MOSFET.
Bottom gate MOSFET driver pin. Connect this pin to the gate of the bottom N-channel MOSFET.
IC ground reference. All control circuits are referenced to this pin.
Supply rail for the internal circuitry. Operating supply range is 4.5 V to 13.2 V. Decouple with a 1 mF capacitor
to GND. Ensure that this decoupling capacitor is placed near the IC.
Compensation Pin. This is the output of the error amplifier (EA) and the non-inverting input of the PWM
comparator. Use this pin in conjunction with the FB pin to compensate the voltage-control feedback loop. Pull
this pin low for disable.
This pin is the inverting input to the error amplifier. Use this pin in conjunction with the COMP pin to com‐
pensate the voltage-control feedback loop. Connect this pin to the output resistor divider (if used) or directly
to V
Offset voltage pin from V
Power Good output. Open drain type output that is flagged low if ±10% of V
out
.
Pin Name
Rating
out
.
BOOT
http://onsemi.com
NCP1588
range from 0.1 mF to 1 mF. Ensure that C
3
Description
COMP/EN
FB, VOS
PGOOD
Symbol
Symbol
BOOT
R
R
MSL
V
UG
T
LG
LX
T
T
qJA
qJC
stg
CC
A
J
38-40 V < 100 ns
30 V for < 100 ns
40 V for < 100 ns
30 V wrt/GND
30 V wrt/GND
V
-55 to +150
15 V wrt/LX
15 V wrt/LX
CC
0 to 150
out
0 to 70
Value
V
3.6 V
3.6 V
15 V
25 V
165
BOOT
7 V
.
MAX
45
+ 0.3 V
1
BOOT
is placed near the IC.
) between this pin and
-2 V < 100 ns
-0.3 V wrt/LX
-0.3 V
-0.3 V
-0.3 V
-0.3 V
-0.3 V
-0.3 V
°C/W
°C/W
V
-5 V
Unit
260
°C
°C
°C
MIN