NCV8800 Datasheet, PDF (1/12 Pages) ON Semiconductor – Synchronous Buck Regulator with 1.0 Amp Switch

NCV8800 Series
Synchronous Buck Regulator
with 1.0 Amp Switch
The NCV8800 is an automotive synchronous step−down buck
regulator. This part provides an efficient step−down voltage compared
to linear regulators. The NCV8800 uses very few external components
allowing for maximum use of printed circuit board space.
Features
• Output Voltage Options: 2.6 V, 3.3 V, 5.0 V, 7.5 V
• ±3.0% Output
• 3.5 V Operation
• AUXILIARY Hold Up Pin (for Cranking Conditions)
• On−Chip Switching Power Devices (0.4 Ω R_DS(ON))
• Constant Frequency
• Synchronous Operation
• On−Chip Charge Pump Control Circuitry
• Nonoverlap Logic
• Power Up Sequencing Control Option (2.6 V and 3.3 V Only)
• ENABLE Battery Voltage Capable Option
• Selectable Reset Delay
• Dual Pin Feedback Connection
• V²â„¢ Control Topology
• Internally Fused Leads in SO−16L Package
• NCV Prefix for Automotive and Other Applications Requiring Site
and Change Control
Typical Applications
• Telecommunications
• Mobile Multimedia
• Instrumentation
• Automotive Entertainment Systems
100
90
80
70
60
50
40
30
20
10
0
0
V_OUT = 7.5 V
V_OUT = 5.0 V
V_OUT = 3.3 V
V_OUT = 2.6 V
V_IN = 13.5 V
L =100 mH
100 200 300 400 500 600 700 800
LOAD CURRENT (mA)
Figure 1. Efficiency vs. Load Current
http://onsemi.com
16
1
SO−16L
DW SUFFIX
CASE 751G
PIN CONNECTIONS AND
MARKING DIAGRAM
1
AUXILIARY
ENABLE
RESET
GND
GND
DELAY
FB1
FB2
16
V_IN
CP
SWITCH
GND
GND
V_IN2
NC
COMP
x
= Voltage Ratings as Indicated Below:
2 = 2.6 V
3 = 3.3 V
5 = 5.0 V
7 = 7.5 V
y
= ENABLE Option as Indicated Below:
S = Sequenced
H = High Voltage
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
© Semiconductor Components Industries, LLC, 2003
1
September, 2003 − Rev. 10
Publication Order Number:
NCV8800/D