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ILC7280CS-3030 Datasheet

  • ILC7280CS-3030

  • MICROPOWER DUAL 150MA CMOS RF LDO REGULATORS WITH 75DB RIPPL...

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  • 9頁(yè)

  • IMPALA

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Impala Linear Corporation
ILC7280
Advance
Micropower Dual 150mA CMOS RF LDO鈩?Regulators
with 75dB Ripple Rejection
General Description
The ILC7280 is two independent 150mA low dropout (LDO)
voltage regulators in an 8-pin MSOP package. Each regu-
lator output is independently short circuit protected and has
independent enable lines. The device offers a unique com-
bination 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 130碌A(chǔ) at 1mA load, and
135碌A(chǔ) at 150mA load.
Ripple Rejection:
55dB at 1kHz and 60dB at 100kHz.
Shutdown mode:
Less than 0.5碌A(chǔ) quiescent current in
shutdown mode.
Small package:
MSOP-8
Small capacitor:
Requires only a 0.47碌F external capacitor
on the regulator output.
Precision output:
Output voltage trimmed to 1% accuracy.
Output Noise:
80碌V
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
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Features
Guaranteed 150mA output per regulator
Ultra low 150mV dropout at 150mA
1% output voltage accuracy
Requires only 0.47碌F output capacitor
Only 150碌A(chǔ) ground current at 150mA load
60dB ripple rejection at 1kHz (C
OUT
= 0.47碌F)
80碌V
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
Applications
Cellular Phones, pagers and wireless headsets
Palmtops, organizers, PDAs and portable electronics
Battery powered portable appliances and equipment
Remote data accumulation and instrumentation
Ordering Information* (T
A
= -40擄C to +85擄C)
ILC7280CS-2530
ILC7280CS-3028
ILC7280CS-2828
ILC7280CS-3030
ILC7280CS-3025
150mA 2.5V and 3.0V LDO regulators
150mA 3.0V and 2.8V LDO regulators
150mA 2.8V and 2.8V LDO regulators
150mA 3.0V and 3.0V LDO regulators
150mA 3.0V and 2.5V LDO regulators
Figure 1: Typical Application
Note: Enable may be connected to V
IN
,
C
NOISE
is common to both LDOs
V
OUTA
0.47-2.2碌F
ceramic
V
OUTB
0.47-2.2碌F +
ceramic
C
NOISE
22pF
(optional)
V
INA
+
GND
+
EN
A
V
INB
+
EN
B
1碌F
ceramic
4.7碌F
Impala Linear Corporation
ILC7280 1.8
(408) 574-3939
www.impalalinear.com
May 2000
1

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