Impala Linear Corporation ILC7280CS-3028, ILC7280CS-3025, ILC7280CS-2530, ILC7280CS-3030, ILC7280CS-2828 Datasheet
Ordering Information* (TA= -40°C to +85°C)
ILC7280CS-2530 150mA 2.5V and 3.0V LDO regulators
ILC7280CS-3028 150mA 3.0V and 2.8V LDO regulators
ILC7280CS-2828 150mA 2.8V and 2.8V LDO regulators
ILC7280CS-3030 150mA 3.0V and 3.0V LDO regulators
ILC7280CS-3025 150mA 3.0V and 2.5V LDO regulators
+
+
+
V
INA
V
INB
1µF
ceramic
EN
A
EN
B
GND
C
NOISE
22pF
(optional)
0.47-2.2µF
ceramic
V
OUTA
V
OUTB
0.47-2.2µF
ceramic
4.7µF
+
The ILC7280 is two independent 150mA low dropout (LDO)
voltage regulators in an 8-pin MSOP package. Each regulator output is independently short circuit protected and has
independent enable lines. The device offers a unique combination of low dropout voltage and low quiescent current of
CMOS as well as the low noise and high ripple rejection
characteristics of bipolar LDO regulators. Moreover, only
one input capacitor is required.
Dropout Voltage: Typically 150mV at 150mA load, and
1mV at 1mA load.
Ground pin current: Typically 130µA at 1mA load, and
135µA at 150mA load.
Ripple Rejection: 55dB at 1kHz and 60dB at 100kHz.
Shutdown mode: Less than 0.5µA quiescent current in
shutdown mode.
Small package: MSOP-8
Small capacitor: Requires only a 0.47µF external capacitor
on the regulator output.
Precision output: Output voltage trimmed to 1% accuracy .
Output Noise: 80µV
RMS
, optional noise bypass capacitor
at pin 3 will further reduce noise on V
OUTA/B
Voltage Pairings available: 3.0/3.0V, 3.0/2.8V, 3.0/2.5V,
2.8/2.8V
Micropower Dual 150mA CMOS RF LDO™ Regulators
with 75dB Ripple Rejection
Impala Linear Cor poration
Impala Linear Corporation
1
(408) 574-3939
www.impalalinear.com
May 2000
ILC7280 1.8
Advance
• Guaranteed 150mA output per regulator
• Ultra low 150mV dropout at 150mA
• 1% output voltage accuracy
• Requires only 0.47µF output capacitor
• Only 150µA ground current at 150mA load
• 60dB ripple rejection at 1kHz (C
OUT
= 0.47µF)
• 80µV
RMS
noise at BW = 300Hz to 50kHz
• Excellent line and load transient response
• Over current / over temperature protection
• 8-pin MSOP package
• -60dB cross talk
• Cellular Phones, pagers and wireless headsets
• Palmtops, organizers, PDAs and portable electronics
• Battery powered portable appliances and equipment
• Remote data accumulation and instrumentation
General Description
Features
Applications
Figure 1: Typical Application
Note: Enable may be connected to VIN,
C
NOISE
is common to both LDOs
ILC7280
Micropower dual 150mA CMOS RF LDO™ Regulators with 75dB Ripple Rejection
Impala Linear Corporation
2
(408) 574-3939
www.impalalinear.com
May 2000
ILC7280 1.8
Advance
Pin Number
1
2
3
4
5
6
7
8
Pin Name
V
OUTA
GND
V
OUTB
C
NOISE (optional)
EN
B
V
INB
EN
A
V
INA
Pin Description
Regulator Output A
Ground
Regulator Output B
Voltage Reference Bypass: Connect external 22pF capacitor to GND to minimize
output noise in regulator “A” or “B.” May be left open. Do not ground.
Enable/Shutdown B (input): CMOS compatible input. Logic high = enable, logic low or
open = shutdown. Do not leave floating.
Supply Input B (Internally connected to pin 8)*
Enable/Shutdown A (Input): CMOS compatible input. Logic high = enable, logic low or
open = shutdown. Do not leave floating.
Supply Input A (Internally connected to pin 6)* Galvanic connection only.
C
NOISE(optional)
1
2
3
4
5
6
7
8
V
INA
EN
A
V
INB
EN
B
V
OUTB
GND
V
OUTA
MSOP
(TOP VIEW)
ILC7280CS-XXXX
Pin-Package Configurations
Pin Functions ILC7280
*If maximum current required from each regulator then connect both pin 6 and pin 8 to V
DD
Micropower Dual 150mA CMOS RF LDO™ Regulators with 75dB Ripple Rejection
Impala Linear Corporation
3
(408) 574-3939
www.impalalinear.com
May 2000
ILC7280 1.8
Advance
Parameter
Input Voltage
S/D Input Voltage
Output Current
Output Voltage
Power Dissipation
Maximum Junction Temperature
Storage Temperature
ESD Rating
Operating Input Voltage
Operating Ambient Temperature
Package Thermal Resistance
Symbol
V
IN
V
S/D
I
OUT
V
OUT
P
D
T
J(max)
T
stg
V
IN
T
A
θ
JA
Ratings
-0.3 to +12
-0.3 to V
IN
Short circuit protected
-0.3 to 10
Internally Limited
175
-40~+125
2
2.1 to 8
-40 to +85
200
Units
V
mA
V
mW
°C
°C
kV
V
°C
°C/W
Absolute Maximum Ratings (Note 1)
Loading...