SI9181DQ-AD-T1 Vishay, SI9181DQ-AD-T1 Datasheet

IC, ADJ LDO REG, 1.5V TO 5V 0.6A 8-TSSOP

SI9181DQ-AD-T1

Manufacturer Part Number
SI9181DQ-AD-T1
Description
IC, ADJ LDO REG, 1.5V TO 5V 0.6A 8-TSSOP
Manufacturer
Vishay
Datasheet

Specifications of SI9181DQ-AD-T1

Primary Input Voltage
6V
Output Voltage Adjustable Range
1.5V To 5V
Dropout Voltage Vdo
150mV
No. Of Pins
8
Output Current
600mA
Operating Temperature Range
-40°C To +85°C
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SI9181DQ-AD-T1
Manufacturer:
SILICONIX
Quantity:
3 393
Part Number:
SI9181DQ-AD-T1
Manufacturer:
SILICONIX
Quantity:
20 000
Part Number:
SI9181DQ-AD-T1
Manufacturer:
VISHAY
Quantity:
6 000
DESCRIPTION
The Si9181 is a 350-mA CMOS LDO (low dropout) voltage
regulator. The device features ultra low ground current and
dropout voltage to prolong battery life in portable electronics.
The Si9181 offers line/load transient response and ripple
rejection superior to that of bipolar or BiCMOS LDO regulators.
The device is designed to maintain regulation while delivering
600-mA peak current. This is useful for systems that have high
surge current upon turn-on. The Si9181 is designed to drive
the lower cost ceramic, as well as tantalum, output capacitors.
The device is guaranteed stable from maximum load current
down to 0-mA load. In addition, an external noise bypass
Document Number: 71119
S-50955—Rev. F, 16-May-05
FEATURES
D Low 150-mV Dropout at 350-mA Load
D Guaranteed 350-mA Output Current
D 600-mA Peak Output Current Capability
D Uses Low ESR Ceramic Output Capacitor
D Fast Load and Line Transient Response
D Only 100-mV(rms) Noise With Noise Bypass
D 1-mA Maximum Shutdown Current
D Built-in Short Circuit and Thermal Protection
D Out-Of-Regulation Error Flag (Power Good or POR)
TYPICAL APPLICATIONS CIRCUITS
GND
Capacitor
V
IN
2.2 mF
FIGURE 1. Fixed Output
1
2
3
4
C
DELAY
GND
V
IN
NOISE
Micropower 350-mA CMOS LDO Regulator
Si9181
SENSE/ADJ
GND
V
IN
ERROR
2.2 mF
V
0.1 mF
With Error Flag/Power-On-Reset
OUT
SD
8
7
6
5
FIGURE 3. Low Noise, Full Features Application
0.1 mF
2.2 mF
V
OUT
1
2
3
4
C
DELAY
GND SENSE/ADJ
V
IN
NOISE
Available
Si9181
ERROR
V
capacitor connected to the device’s C
LDO’s output noise for low noise applications.
The Si9181 also includes an out-of-regulation error flag. When
the output voltage is 5% below its nominal output voltage, the
error flag output goes low. If a capacitor is connected to the
device’s delay pin, the error flag output pin will generate a
delayed power-on-reset signal.
The Si9181 is available in both standard and lead (Pb)-free
packages.
GND
OUT
D Fixed 1.5-V, 1.8-V, 2.5-V, 2.8-V, 3.0-V, 3.3-V, 5.0-V,
D Other Output Voltages Available by Special Order
APPLICATIONS
D Cellular Phones
D Laptop and Palm Computers
D PDA, Digital Still Cameras
SD
V
IN
2.2 mF
or Adjustable Output Voltage Options
8
7
6
5
2.2 mF
FIGURE 2. Adjustable Output
1
2
3
4
1 MW
C
DELAY
GND SENSE/ADJ
V
IN
NOISE
Si9181
ON/OFF
POR
V
OUT
ERROR
V
OUT
SD
Vishay Siliconix
8
7
6
5
NOISE
pin will lower the
Si9181
www.vishay.com
2.2 mF
V
OUT
1

Related parts for SI9181DQ-AD-T1

SI9181DQ-AD-T1 Summary of contents

Page 1

... IN 2.2 mF 2.2 mF GND NOISE 2 7 DELAY ERROR 0 GND SENSE/ADJ OUT Si9181 FIGURE 3. Low Noise, Full Features Application Si9181 Vishay Siliconix pin will lower the NOISE NOISE 2 7 DELAY ERROR 3 6 GND SENSE/ADJ OUT 2.2 mF Si9181 FIGURE 2. Adjustable Output ON/OFF POR 1 MW ...

Page 2

... Si9181 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Input Voltage Input Voltage Output Current OUT Output Voltage OUT Maximum Junction Temperature J(max) Storage Temperature STG ESD (Human Body Model Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied ...

Page 3

... V, Regulator OFF Regulator ON SD ERROR = V OUT(nom SINK < are measured 1.8 V. OUT OUT = 2 5.0 V. OUT OUT = 1 5.0 V and V OUT OUT Si9181 Vishay Siliconix Limits −40 to 85_C Temp Min Typ Max Room 0.1 1 Room 5 100 Room 600 Room 200 Room 100 Room ...

Page 4

... Si9181 Vishay Siliconix TIMING WAVEFORMS PIN CONFIGURATION C NOISE DELAY GND PIN DESCRIPTION Pin Number Name Noise bypass pin. For low noise applications, a 0.01-mF or larger ceramic capacitor should be connected from this pin 1 C NOISE to ground. Capacitor connected from this pin to ground will allow a delayed power-on-reset signal at the ERROR (Pin 7) output. ...

Page 5

... Si9181DQ-25-T1 Si9181DQ-25-T1—E3 Si9181DQ-28-T1 Si9181DQ-28-T1—E3 Si9181DQ-30-T1 Si9181DQ-30-T1—E3 Si9181DQ-33-T1 Si9181DQ-33-T1—E3 Si9181DQ-50-T1 Si9181DQ-50-T1—E3 Si9181DQ-AD-T1 Si9181DQ-AD-T1—E3 * Additional voltage options are available. Eval Kit Si9181DB TYPICAL CHARACTERISTICS (INTERNALLY REGULATED, 25_C UNLESS NOTED) Dropout Voltage vs. Load Current 300 V = 3.3 V OUT 250 ...

Page 6

... Si9181 Vishay Siliconix TYPICAL CHARACTERISTICS (INTERNALLY REGULATED, 25_C UNLESS NOTED) Normalized Output Voltage vs. Load Current 0.30 0.15 0.00 −0.15 −0.30 −0.45 −0.60 −0. 100 150 200 Load Current (mA) GND Current vs. Load Current 0 OUT −0.3 −0.6 −0.9 −1.2 −1 100 150 200 ...

Page 7

... V = 4.3 to 5.3 V INSTEP V = 3.3 V OUT C = 2.2 mF OUT 350 mA LOAD msec rise Document Number: 71119 S-50955—Rev. F, 16-May-05 Vishay Siliconix Load Transient Response-2 V OUT 10 mV/div I LOAD 100 mA/div 5.00 ms/div V = 3.3 V OUT C = 2.2 mF OUT I = 150 LOAD msec fall Load Transient Response-4 ...

Page 8

... Si9181 Vishay Siliconix TYPICAL WAVEFORMS Turn-On Sequence V 2 V/div V/div OUT C 2 V/div delay ERROR 2 V/div 10.00 ms/div 3.3 V OUT C = 0.1 mF delay C = 0.1 mF NOISE I = 350 mA LOAD Output Noise 500 mV/div 1 ms/div 3.3 V OUT I = 150 mA OUT C = 0.1 mF NOISE MHz www.vishay.com ...

Page 9

... S-50955—Rev. F, 16-May-05 Switches shown for device in normal operating mode (SD = HIGH NOISE + − − + − REF − NOISE + − − + − REF − Si9181 Vishay Siliconix 5 V OUT C OUT 2 EXT C DELAY 0.1 mF ERROR ADJ OUT C OUT 2 EXT C DELAY 0.1 mF ERROR 7 www.vishay.com 9 ...

Page 10

... OUT 25-kW to 150-kW range for low power consumption, while maintaining adequate noise immunity. Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon Technology and Package Reliability represent a composite of all qualified locations. http://www.vishay.com/ppg?71119. ...

Page 11

... Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’ ...

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