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
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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
V
2
™
Control Topology
Internally Fused Leads in SO-
-16L Package
NCV Prefix for Automotive and Other Applications Requiring Site
and Change Control
16
1
SO-
-16L
DW SUFFIX
CASE 751G
PIN CONNECTIONS AND
MARKING DIAGRAM
AUXILIARY
ENABLE
RESET
GND
GND
DELAY
FB1
FB2
x
1
NCV8800xy
AWLYYWW
16
V
IN
CP
SWITCH
GND
GND
V
IN2
NC
COMP
These devices are available in Pb-
-free package(s). Specifications herein
apply to both standard and Pb-
-free devices. Please see our website at
www.onsemi.com for specific Pb-
-free orderable part numbers, or
contact your local ON Semiconductor sales office or representative.
Typical Applications
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Telecommunications
Mobile Multimedia
Instrumentation
Automotive Entertainment Systems
= 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 12 of this data sheet.
©
Semiconductor Components Industries, LLC, 2006
March, 2006 - Rev. 11
-
1
Publication Order Number:
NCV8800/D
NCV8800 Series
100
90
80
EFFICIENCY (%)
70
60
50
40
30
20
10
0
0
V
IN
= 13.5 V
L =100
mH
100
200
300
400
500
600
700
800
V
OUT
= 7.5 V
V
OUT
= 5.0 V
V
OUT
= 3.3 V
V
OUT
= 2.6 V
LOAD CURRENT (mA)
Figure 1. Efficiency vs. Load Current
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2
NCV8800 Series
Auxiliary Supply
(optional)
External Regulator
0.01
μF
MRA4004T3
0.1
μF
5.1 k
AUXILIARY
ENABLE
RESET
GND
GND
DELAY
FB1
FB2
V
IN
CP
SWITCH
GND
GND
V
IN2
NC
COMP
10
μF*
100
Ω
1.0 k
100
μH
0.1
μF
V
OUT
*The supply capacitor
must be located
physically close to
the IC pins.
V
BAT
NCV8800
0.01
μF
RESET
100
μF
Figure 2. Application Diagram
Figure 3. Typical Operation With An 8.0
Ω
Load
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NCV8800 Series
MAXIMUM RATINGS*
Rating
Supply Voltages, V
IN
, V
IN2
AUXILIARY
ENABLE (Sequenced Option)
ENABLE (High Voltage Option)
RESET
DELAY
SWITCH (V
5VSENSE
= 0 V)
Operating Junction Temperature
Storage Temperature Range
ESD -- Human Body Model (AUXILIARY, ENABLE, RESET, DELAY, FB1, FB2, CP, SWITCH, COMP)
Human Body Model (VIN, VIN2)
Machine Model (All Pins)
Package Thermal Resistance, SO--16L
Junction--to--Case, R
θJC
Junction--to--Ambient, R
θJA
Lead Temperature Soldering:
1. 60 second maximum above 183°C.
2. --5°C/+0°C allowable condition.
*The maximum package power dissipation must be observed.
Reflow (SMD Style Only) (Note 1)
Value
--0.3 to 45
--0.3 to 8.0
--0.3 to 7.0
--0.3 to 8.0
--0.3 to 30
--0.3 to 7.0
--1.0 to 45
--40 to 150
--55 to 150
2.0
1.3
200
18
80
240 Peak
(Note 2)
Unit
V
V
V
V
V
V
V
°C
°C
kV
kV
V
°C/W
°C
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NCV8800 Series
ELECTRICAL CHARACTERISTICS
(--40°C
≤
T
J
≤
125°C; Sequenced ENABLE Option: 3.5 V
≤
V
IN
≤
16 V,
3.5 V
≤
V
IN2
≤
16 V, AUXILIARY = 6.0 V, ENABLE = 5.0 V; High Voltage ENABLE Option: 6.0 V
≤
V
IN
≤
16 V, 6.0 V
≤
V
IN2
≤
16 V;
unless otherwise stated.)
Characteristic
General
Quiescent Current (V
IN2
)
Sleep Mode
Operating
ENABLE = 0 V, V
IN
= 12.6 V,
T
J
= --40°C
ENABLE = 0 V, V
IN
= 12.6 V,
T
J
= 25°C, 125°C
ENABLE = 5.0 V, V
IN
= 13.5 V, I
OUT
= 0
--
--
Note 3
--
--
--
180
85
150
--
--
--
200
90
165
40
30
15
230
95
200
μA
μA
mA
kHz
%
°C
Test Conditions
Min
Typ
Max
Unit
Switching Frequency
Switching Duty Cycle
Thermal Shutdown
Feedback
Feedback Voltage Threshold, 2.6 V Option (V
FB
)
Feedback Voltage Threshold, 3.3 V Option (V
FB
)
Feedback Voltage Threshold, 5.0 V Option (V
FB
)
Feedback Voltage Threshold, 7.5 V Option (V
FB
)
RESET
Undervoltage RESET Threshold, 2.6 V Option
Undervoltage RESET Hysteresis, 2.6 V Option
Overvoltage RESET Threshold, 2.6 V Option
Overvoltage RESET Hysteresis, 2.6 V Option
Undervoltage RESET Threshold, 3.3 V Option
Undervoltage RESET Hysteresis, 3.3 V Option
Overvoltage RESET Threshold, 3.3 V Option
Overvoltage RESET Hysteresis, 3.3 V Option
Undervoltage RESET Threshold, 5.0 V Option
Undervoltage RESET Hysteresis, 5.0 V Option
Overvoltage RESET Threshold, 5.0 V Option
Overvoltage RESET Hysteresis, 5.0 V Option
Undervoltage RESET Threshold, 7.5 V Option
Undervoltage RESET Hysteresis, 7.5 V Option
Overvoltage RESET Threshold, 7.5 V Option
Overvoltage RESET Hysteresis, 7.5 V Option
3. Guaranteed By Design.
V
OUT
Increasing
V
OUT
Decreasing
V
OUT
Increasing
V
OUT
Decreasing
V
OUT
Increasing
V
OUT
Decreasing
V
OUT
Increasing
V
OUT
Decreasing
V
OUT
Increasing
V
OUT
Decreasing
V
OUT
Increasing
V
OUT
Decreasing
V
OUT
Increasing
V
OUT
Decreasing
V
OUT
Increasing
V
OUT
Decreasing
--
--
--
--
2.522
3.201
4.850
7.275
2.6
3.3
5.0
7.5
2.678
3.399
5.150
7.725
V
V
V
V
2.44
2.40
--
40
V
FB
+ 0.04
V
FB
--
40
3.10
3.04
--
50
V
FB
+ 0.05
V
FB
--
50
4.70
4.61
--
75
V
FB
+ 0.075
V
FB
--
75
7.05
6.92
--
115
V
FB
+ 0.115
V
FB
--
115
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
V
FB
V
FB
-- 0.04
--
2.80
2.76
--
V
FB
V
FB
-- 0.05
--
3.56
3.51
--
V
FB
V
FB
-- 0.075
--
5.39
5.31
--
V
FB
V
FB
-- 0.115
--
8.08
7.96
--
V
V
mV
V
V
mV
V
V
mV
V
V
mV
V
V
mV
V
V
mV
V
V
mV
V
V
mV
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