nx2155h Microsemi Corporation, nx2155h Datasheet - Page 2

• Manufacturer Part Number: nx2155h
• Description: Single Power Supply Synchronous Pwm Controller
• Manufacturer: Microsemi Corporation

ABSOLUTE MAXIMUM RATINGS
VCC to GND & BST to SW voltage ................... 6.5V
BST to GND Voltage ...................................... 30V
VIN to GND Voltage ........................................ 25V
SW to GND .................................................... -2V to 35V
All other pins .................................................. -0.3V to 6.5V
Storage Temperature Range ............................. -65
Operating Junction Temperature Range ............. -40
NOTE1: Stresses above those listed in "ABSOLUTE MAXIMUM RATINGS", may cause permanent damage to
the device. This is a stress only rating and operation of the device at these or any other conditions above those
indicated in the operational sections of this specification is not implied.
PACKAGE INFORMATION
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over Vin = 12V, and T
capacitors:C
pulse testing is used which keeps junction and case temperatures equal to the ambient temperature.
Rev.1.1
04/16/09
Reference Voltage
Ref Voltage
Ref Voltage line regulation
5VREG
5VREG Voltage range
5VREG UVLO
5VREG UVLO Hysteresis
5VREG Line Regulation
5VREG Max Current
Supply Voltage(Vin)
V
Input Voltage Current(Static)
Input Voltage Current
(Dynamic)
in
5VREG
Voltage Range
HDRV
LDRV
BST
SW
10-LEAD PLASTIC MSOP-EP
PARAMETER
1
2
3
4
5
VIN
=1uF, C
GND
(PAD)
5VREG
=4.7uF, all X5R ceramic capacitors. Typical values refer to T
10
9
8
7
6 VIN
OCP
FB
COMP
RT
SYM
V
V
REF
JA
in
o
V
5V REG rising
V
No switching
Switching with HDRV and
LDRV open @2.2MHz
C W
in
IN
=8V to 22V
=9V to 22V
o
o
C to 150
C to 125
Test Condition
(NOTE1)
o
o
C
C
A
= 0 to 70
0.784
4.75
Min
3.7
5.4
20
8
o
C. Followings are bypass
A
TYP
0.8
0.4
3.9
0.2
4.8
= 25
10
50
5
8
o
NX2155H
C. Low duty cycle
0.816
MAX
5.25
4.4
6.5
20
22
11
Units
mV
mA
mA
mA
%
V
V
V
V
V
2