SC560HULTRT Semtech, SC560HULTRT Datasheet

IC LDO REG DUAL-OUT LN 8-MLPQ

SC560HULTRT

Manufacturer Part Number
SC560HULTRT
Description
IC LDO REG DUAL-OUT LN 8-MLPQ
Manufacturer
Semtech
Datasheet

Specifications of SC560HULTRT

Regulator Topology
Positive Fixed
Voltage - Output
3.3V
Voltage - Input
2.5 ~ 5.5 V
Voltage - Dropout (typical)
0.1V @ 200mA
Number Of Regulators
2
Current - Output
300mA
Current - Limit (min)
350mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-MLPQ
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
SC560HULTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SC560HULTRT
Manufacturer:
SEMTECH/美国升特
Quantity:
20 000
Part Number:
SC560HULTRT
0
POWER MANAGEMENT
Features
Applications
Typical Application Circuit
March 28, 2008
Input voltage range — 2.5V to 5.5V
Output voltage ranges
Maximum output current — 300mA (both LDOs)
Dropout at 200mA load
Quiescent supply current
enabled)
Shutdown current
Output noise < 50μV
versions)
PSRR < -65dB at 1kHz (SC560A and fi xed output
versions)
Over-temperature protection
Short-circuit protection
Under-voltage lockout
Power good monitor for output A (SC560C and fi xed
output versions)
Independent enable/disable for LDOB (SC560B and
fi xed output versions)
MLPQ-UT8, 1.5mm x 1.5mm x 0.6mm package
PDAs and cellular phones
GPS devices
Palmtop computers and handheld instruments
TFT/LCD applications
Wireless handsets
Digital cordless phones and PCS phones
Personal communicators
Wireless LAN
ENB
VIN
EN
2.2μF
100nA (typ)
C
RMS
IN
1.2V to 5.0V (each LDO)
(SC560A and fi xed output
200mV max.
100μA (both LDOs
EN
ENB
VIN
© 2008 Semtech Corporation
SC560D
GND
PGOOD
OUTA
OUTB
BYP
Description
The SC560 is a family of dual output, ultra-low dropout
linear voltage regulators designed for use in battery
powered wireless applications. The SC560A, SC560B, and
SC560C provide adjustable output voltages that can be
set using two external resistors. Fixed output voltages
are also available (see ordering information for available
combinations). Fixed output devices provide the power-
good monitor, independent enable pins, and a bypass pin
for low-noise operation
All members of the SC560 family require an input voltage
level between 2.5V and 5.5V. Output voltages for the
adjustable versions can vary between 1.2V and 5.0V. Fixed
output voltage options are also chosen from this range.
The SC560A provides superior low-noise performance
by using an external bypass capacitor connected to pin
7 to fi lter the bandgap reference. The SC560B uses pin 7
as a separate enable pin for the second regulator output
so the two outputs can be controlled independently.
The SC560C uses this pin to provide a PGOOD output
to hold a processor in reset when the voltage on OUTA
is not in regulation. All other versions provide all three
functions with fi xed output voltages (no feedback pins
are provided).
The device also provides protection circuitry such as
current limiting, under-voltage lockout, and thermal
protection to prevent device failures. Stability is
maintained by using 1μF capacitors on the output pins.
The MLPQ-UT8 package and 0402 ceramic capacitors
minimize the required PCB area.
Dual Output Low Noise LDO
22nF
C
BYP
C
1μF
OUTA
C
1μF
OUTB
Linear Regulator
PGOOD
OUTA
OUTB
SC560
1

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SC560HULTRT Summary of contents

Page 1

... The MLPQ-UT8 package and 0402 ceramic capacitors minimize the required PCB area. SC560D VIN PGOOD EN OUTA ENB OUTB C BYP GND 22nF © 2008 Semtech Corporation SC560 Linear Regulator PGOOD OUTA OUTB C C BYP OUTA OUTB 1μF 1μF 1 ...

Page 2

Pin Confi guration 8 1 TOP VIEW MLPQ-UT-8; 1.5x1.5, 8 LEAD θ = 157°C/W JA Marking Information Part No. Code See Pinout and Voltage Options Table for details yw = Datecode Ordering Information ...

Page 3

Absolute Maximum Ratings VIN ( ...

Page 4

Electrical Characteristics (continued) Parameter Noise (3) Power Supply Rejection (3) Ratio (4) PGOOD Delay (4) PGOOD Threshold Start-Up Time Power Up Delay Between LDOA and (5) LDOB Under Voltage Lockout UVLO Hysteresis Over Temperature Protection Threshold Over Temperature Hysteresis Digital ...

Page 5

Typical Characteristics Load Regulation — LDOA V = 3.3V 3.6V OUTA 100 Output Current (mA) Line Regulation — LDOA V = 3.3V 1mA OUTA OUTA 2 ...

Page 6

Typical Characteristics (continued) PSRR vs. Frequency (Both LDOs 2.8V, I =50mA, C =22nF OUT o BYP 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 10 100 Frequency (Hz) Output Noise vs. Load Current (Both LDOs) V ...

Page 7

Pin Confi gurations and Descriptions Pin # SC560A SC560B SC560C Pin SC560 Name Fixed Output 1 ...

Page 8

Block Diagrams VIN VIN 2 5 GND EN 6 VIN VIN 2 5 GND ENB SC560A VREF UVLO O/T Power- ON Logic SC560B VREF UVLO O/T Power- ON Logic 7 BYP VIN 3 OUTA LDOA 4 FBA ...

Page 9

Block Diagrams (continued) VIN VIN 2 VREF 5 GND Power VIN 2 VIN VREF 5 GND 6 EN Power- 4 ENB SC560C UVLO O/T ON Logic SC560 – Fixed Output Versions UVLO O/T ON Logic 7 PGOOD PGOOD ...

Page 10

Applications Information General Description The SC560 is a family of dual output linear regulator devices intended for applications where low dropout voltage, low supply current, and low output noise are critical. Each device provides a very simple, low cost solution ...

Page 11

Applications Information (continued) The values of the resistors in the voltage divider network can be calculated using the equation OUT REF R 2 where V = 1V. The value of R2 should be 100kΩ ...

Page 12

Applications Information (continued) Thermal Considerations Although each of the two LDOs in the SC560 can provide 300mA of output current, the maximum power dissipation in the device is restricted by the miniature package size. The graphs in Figure 3 and ...

Page 13

Applications Information (continued) Layout Considerations While layout for linear devices is generally not as critical as for a switching application, careful attention to detail will ensure reliable operation. The diagram below illustrates proper layout of a circuit using the SC560A. ...

Page 14

Outline Drawing — MLPQ-UT8 A PIN 1 INDICATOR (LASER MARK) A aaa 0.20 1 0.25 0.17 NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE ...

Page 15

... CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. Contact Information DIM (Z) ( Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805) 498-2111 Fax: (805) 498-3804 www.semtech.com SC560 DIMENSIONS INCHES MILLIMETERS (.057) (1.45) .028 0.70 .016 ...

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