DC-DC Regulator. SC195B Datasheet

SC195B Regulator. Datasheet pdf. Equivalent


Part SC195B
Description 500mA Synchronous Step Down DC-DC Regulator
Feature POWER MANAGEMENT Features  Input Voltage — 2.9V to 5.5V  Output Voltage — 0.8V to 3.6V  Output cu.
Manufacture Semtech
Datasheet
Download SC195B Datasheet


POWER MANAGEMENT Features  Input Voltage — 2.9V to 5.5V  O SC195B Datasheet
Recommendation Recommendation Datasheet SC195B Datasheet




SC195B
POWER MANAGEMENT
Features
Input Voltage — 2.9V to 5.5V
Output Voltage — 0.8V to 3.6V
Output current capability — 500mA
Efficiency up to 94%
15 Programmable output voltages
High light-load efficiency via automatic PSAVE mode
Fast transient response
Temperature range — -40 to +85°C
Oscillator frequency — 3.5MHz
100% duty cycle capability
Quiescent current — 38µA typ
Shutdown Current — 0.1µA typ
Internal soft-start
Over-voltage protection
Current limit and short circuit protection
Over-temperature protection
Under-voltage lockout
Floating control pin protection
WLCSP8-0.80 X 0.80 X 0.375 (mm) package
Pb free, halogen free, and RoHS/WEEE compliant
Applications
Smart phones and cellular phones
MP3/Personal media players
Personal navigation devices
Digital cameras
Single Li-ion cell or 3 NiMH/NiCd cell devices
Devices with 3.3V or 5V internal power rails
SC195B
3.5MHz, 500mA Synchronous
Step Down DC-DC Regulator
Description
The SC195B is a high efficiency, 500mA step down regula-
tor designed to operate with an input voltage range of
2.9V to 5.5V. The input voltage range makes it ideal for
battery operated applications with space limitations. The
SC195B also includes fifteen programmable output
voltage settings that can be selected using the four
control pins, eliminating the need for external feedback
resistors. The output voltage can be fixed to a single
setting or dynamically switched between different levels.
Pulling all four control pins low disables the output and
puts the device into a low current shutdown state.
The SC195B operates at a fixed 3.5MHz switching fre-
quency in normal PWM (Pulse-Width Modulation) mode.
A variable frequency PSAVE (power-save) mode is used to
optimize efficiency at light loads for each output setting.
Built-in hysteresis prevents chattering between the two
modes.
The SC195B provides several protection features to safe-
guard the device under stressed conditions. These
include short circuit protection, over-temperature protec-
tion, over-voltage protection, under-voltage lockout, and
soft-start to control in-rush current. These features
coupled with the small 8-bump 0.80 X 0.80 X 0.375 (mm)
package make it a versatile device ideal for step-down
regulation in products needing high efficiency and a
small PCB footprint.
Typical Application Circuit
VIN
2.9V to 5.5V
Control Logic
(May also be
hard wired to
VIN/ GND)
CIN
4.7µF
SC195B
VIN LX
CTL3
CTL2
CTL1
CTL0
OUT
GND
L1
1µH
VOUT
0.8V to 3.6V
COUT
10µF
Rev 2.1
Semtech Corporation




SC195B
Bump Configuration
Top View
12
CTL2 CTL0
A
IN
B
LX GND
C
3
CTL1
CTL3
OUT
SC195B
Ordering Information
Device
SC195BCSTRT(1)(2)
SC195BEVB
Package
WLCSP8-0.80X0.80X0.375
Evaluation Board
Notes:
(1) Available in tape and reel only. A reel contains 3,000 devices.
(2) Lead-free packaging only. Device is WEEE and RoHS compliant
and halogen-free.
WLCSP8 0.80 X 0.80 (mm)
θJA = 107 °C/W
Marking Information
MM
A1 Corner Bump and Part Number Marking Code
Table 1 – Output Voltage (CTL) Settings
CTL3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
CTL2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
CTL1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
CTL0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Vout
Shutdown
0.80
1.00
1.10
1.20
1.35
1.50
1.60
1.80
2.00
2.50
2.80
3.00
3.30
3.40
3.60








@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)