SC416 Datasheet PDF - Semtech Corporation
| Part Number | SC416 | |
| Description | Dual Synchronous Buck Controller | |
| Manufacturers | Semtech Corporation | |
| Logo |  |
|
|
There is a preview and SC416 download ( pdf file ) link at the bottom of this page. Total 34 Pages | ||
Preview 1 page No Preview Available !
SC416
POWER MANAGEMENT
Features
Dual Synchronous Buck Controller
with Tracking Start-up/Shutdown
Description
VIN Range 3-25V
Outputs Adjustable from 0.75 to 5.25V, or
Preset Output Voltages:
• VOUT1 = 1.8 or 1.5V
• VOUT2 = 1.25 or 1.05V
Proportional or Coincident Tracked Start-up and Shut-
down of Both Outputs
www.DataSheet4U.com
Adjustable Soft-start Rates for Each Output
Regulated Shutdown for Each Output
Low Shutdown Power
Constant On-Time for Fast Dynamic Response
Adjustable Switching Frequency
Separated Frequencies for Minimal Switching Interac-
tion:
• VOUT1 = up to 600kHz
• VOUT2 = up to 720kHz
Power Save or Continuous Operation at Light Load
Over-Voltage and Under-Voltage Fault Protection
Cycle-by-Cycle Valley Current Limit
DC Current Sense Using Low-Side RDSON Sensing, or
RSENSE In Source of Low-Side MOSFET for Greater
Accuracy
Separate Power Good Outputs
Separate Enable/Power Save Inputs
3.1A Non-Overlapping Gate Drive
SmartDriveTM for High-side MOSFET
MLP 4x4 24 Pin Lead-free Package
Industrial Temperature Range
WEEE and RoHS Compliant
Applications
Notebook and Sub-Notebook Graphics
Voltage Controllers
Tablet PCs
Embedded Applications
The SC416 is a versatile, constant on-time, pseudo-
fixed-frequency, dual synchronous buck PWM control-
ler intended for notebook computers and other battery
operated portable devices. The SC416 contains all the
features needed to provide cost-effective control of two
independent switchmode power supplies.
The SC416 provides adjustable voltage tracking during
start-up and shut-down, making it an effective solution
for a variety of applications where the voltage differen-
tial between supply rails must meet defined limits dur-
ing all operating conditions including start-up and shut-
down. The SC416 supports proportional tracking which
gives equal start-up and shut-down times for both out-
puts, and can also provide coincident tracking where the
two output voltages are equal during the lower voltage’s
start-up and shut-down ramp.
The two DC outputs are adjustable from 0.75V to 5.25V.
Additional features for each output include cycle-by-
cycle current limit, voltage soft-start, under-voltage and
over-voltage protection, programmable over-current
protection, regulated shutdown, selectable power save
and non-overlapping gate drive. The SC416 provides
two enable/power save inputs, two soft-start inputs, two
power good outputs and an on-time adjust input.
The constant on-time topology provides fast dynamic
response. The excellent transient response means that
SC416 based solutions require less output capacitance
than competing fixed frequency converters. Switching
frequency is constant until a step in load or line voltage
occurs, at which time the pulse density and frequency
moves to counter the change in output voltage. After
the transient event, the controller frequency returns to
steady state operation. At light loads with power save
enabled, the SC416 reduces switching frequency for im-
proved efficiency.
May 17, 2007
© 2007 Semtech Corporation
1
|
| |
 
SC416
Electrical Characteristics (continued)
Parameter
Regulation (Continued)
VOUT2 On-Time Threshold
www.DataSVhOeeUtT4xUL.cinome Regulation Error
VOUTx Load Regulation Error
Timing
VOUTx On-Time(1)
VOUTx Set to 1.5V
Minimum On-Time
Minimum Off-Time
Soft-Start/Shutdown
Soft-Start SSx Current Source
Shutdown SSx Current Sink
Soft-Start Ramp Time
SSx Shutdown
Discharge Resistance
VOUTx Shutdown
Discharge Resistance
Analog Inputs/Outputs
VOUT1 Input Resistance
VOUT2 Input Resistance
FBx Input Bias Current
Current Sense
ILIMx Source Current
ILIMx Comparator Offset
Current Limit (Negative)
Zero Crossing Detector Threshold
Power Good
PGDx Threshold
PGDx Threshold Delay Time (2)
Conditions
FB2 = 5V; 0 to 85°C
FB2 = 5V; -40 to 85°C
FB2 = RTN; 0 to 85°C
FB2 = RTN; -40 to 85°C
VOUT1; RTON = 1Meg
VOUT2; RTON = 1Meg
VOUT1; RTON = 499K
VOUT2; RTON = 499K
DH1, DH2
DL1, DL2
CSSx = 4.7nF
ENx = RTN,
VOUTx < 300mV
ENx = RTN,
VOUTx < 300mV
EN1 = VDD1
EN2 = VDD2
ILIMx - GND
LXx - GND
LXx - GND
1% Hysteresis Typical,
with Respect to
Regulation Point
25°C
Min Typ Max
-40° to 85°C
Min Max
Units
1.25 1.2343 1.2656
V
1.25 1.2281 1.2718
1.05 1.0368 1.0631
1.05
1.0316 1.0684
V
0.04 %/V
0.3 %
400 320 480
330 260 400
nsec
200
167
50 ns
330 ns
5 3.5 6.5 μA
5 3.5 6.5 μA
700 μsec
16 Ω
16 Ω
120 kΩ
90 kΩ
-1 +1 μA
10 9 11 μA
-10 +10 mV
80 60 100 mV
-7 +7 mV
-12 -9 -15 %
5 μs
5
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for SC416 electronic component. |
| Information | Total 34 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ SC416.PDF Datasheet ] | |
Share Link :
Electronic Components Distributor
|
An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists. |
| SparkFun Electronics | Allied Electronics | DigiKey Electronics | Arrow Electronics |
| Mouser Electronics | Adafruit | Newark | Chip One Stop |
Featured Datasheets
| Part Number | Description | MFRS |
| SC410A | The function is Step-Down Regulator. Semtech |  |
| SC411 | The function is Synchronous Buck Pseudo-Fixed Frequency Power Supply Controller. Semtech Corporation | |
| SC412A | The function is Synchronous Buck Controller. Semtech Corporation | |
Semiconductors commonly used in industry:
1N4148 |
BAW56 |
1N5400 |
NE555 | | ||
Quick jump to:
SC41
1N4
2N2
2SA
2SC
74H
BC
HCF
IRF
KA | ||