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PDF NCV97311 Data sheet ( Hoja de datos )
| Número de pieza | NCV97311 | |
| Descripción | Automotive BatteryConnected Low-Iq MultiOutput Power Management Unit | |
| Fabricantes | ON Semiconductor | |
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NCV97311
Automotive Battery-
Connected Low-Iq Multi-
Output Power Management
Unit with 3 Buck Regulators
Description
The NCV97311 is a 3−output regulator consisting of a low−Iq
battery−connected 3 A, 2 MHz non−synchronous switcher and two
low−voltage 1.5 A, 2 MHz synchronous switchers; all using integrated
power transistors.
The high−voltage switcher is capable of converting a 4.1 V to 18 V
battery input to a 5 V or 3.3 V output at a constant 2 MHz switching
frequency, delivering up to 3 A. In overvoltage conditions up to 37 V,
the switching frequency folds back to 1 MHz; in load dump conditions
up to 45 V the regulator shuts down.
The output of the battery−connected buck regulator serves as the low
voltage input for the 2 downstream synchronous switchers. Each
downstream output is adjustable from 1.2 V to 3.3 V, with a 1.5 A
average current limit and a constant 2 MHz switching frequency. Each
switcher has an independent enable and reset pin, giving extra power
management flexibility.
For low−Iq operating mode, the low−voltage switchers are disabled
and the standby rail is supplied by a low−Iq LDO (up to 150 mA) with
a typical Iq of 30 mA. The LDO regulator is in parallel to the
high−voltage switcher, and is activated when the switcher is forced in
standby mode.
All 3 SMPS outputs use peak current mode control with internal
slope compensation, internally−set soft−start, battery undervoltage
lockout, battery overvoltage protection, cycle−by−cycle current
limiting, hiccup mode short−circuit protection and thermal shutdown.
An error flag is available for diagnostics.
www.onsemi.com
1 32
QFN32
MW SUFFIX
CASE 488AM
MARKING DIAGRAM
1
NCV97311
XX
AWLYYWWG
G
XX = 33 or 50
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering, marking and shipping information on
page 24 of this data sheet.
Features
• 5.0 V and 3.3 V Versions Available
• Low Quiescent Current in Standby Mode
• Programmable Spread Spectrum for EMI Reduction
• 2 Microcontroller Enabled Low Voltage Synchronous
Buck Converters
• Large Conversion Ratio of 18 V to 3.3 V Battery
Connected Switcher
• Wide Input of 4.1 to 45 V with Undervoltage Lockout
(UVLO)
• Fixed Frequency Operation Adjustable from 2.0 to
2.6 MHz
• Internal 1.5 ms Soft−starts
• Cycle−by−cycle Current Limit Protections
• Hiccup Overcurrent Protections (OCP)
• Individual Reset Pins with Adjustable Delays
• QFN Package with Wettable Flanks (pin edge plating)
• NCV Prefix for Automotive and Other Applications
Requiring Unique Site and Control Change
Requirements; AEC−Q100 Qualified and PPAP
Capable
• These Devices are Pb−Free, Halogen Free/BFR Free
and are RoHS Compliant
Typical Applications
• Infotainment, Body Electronics, Telematics, ECU
© Semiconductor Components Industries, LLC, 2015
September, 2015 − Rev. 2
1
Publication Order Number:
NCV97311/D
1 page  
NCV97311
V BAT
D1 CBST1 L1
C DRV1
R FB2D
C OUT1
C BST2
C IN1
32
SW1 VDRV1 BST1
1 VBAT
EN Exposed
Pad
VINL
VOUT
FB2
STBYB
25
NC BST2
GND2 24
SW2
VIN2
V OUT1
R FB2U
C OUT2
V OUT2
L2
RDEPTH
RDEPTH
R MOD RMOD
RSTB1
VIN3
VDRV2 CDRV2
SW3H
C IN2
CCOMP1 RCOMP1 COMP1
SW3L
L3
R OSC
ROSC
8
ERRB EN2 RSTB2 GND1 RSTB3 FB3
9
GND3
17
EN3 BST3
16
C BST3
C OUT3
VOUT3
R FB3U
Figure 4. Typical Application − 3.3 V Version
www.onsemi.com
5
5 Page 
NCV97311
Table 4. ELECTRICAL CHARACTERISTICS (VBAT = VINL = 4.5 V to 28 V, VEN = VSTBYB = VEN2 = VEN3 = 5 V, VBSTx = VSWx +
3.0 V, CDRV1 = 0.1 mF, CDRV2 = 0.47 mF. Min/Max values are valid for the temperature range −40°C ≤ TJ ≤ 150°C unless noted otherwise,
and are guaranteed by test, design or statistical correlation.)
Parameter
Symbol
Conditions
Min Typ Max Unit
ERROR FLAG
ERRB Output Low level
THERMAL SHUTDOWN
VERRBL
IERRB = 1 mA
0.4 V
Thermal Warning Activation
Temperature (Note 2)
TWARN
150 °C
Thermal Shutdown Activation
Temperature (Note 2)
TSD
150 190 °C
Hysteresis (Note 2)
THYS
5 20 °C
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
2. Not tested in production. Limits are guaranteed by design.
3. Minimum load parameters are only valid for the 5.0 V version, OPN: NCV97311MW50R2G
www.onsemi.com
11
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet NCV97311.PDF ] | |
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