MAX8878EZK30+ [MAXIM]
Low-Noise, Low-Dropout, 150mA Linear Regulators with '2982 Pinout;
| 型号： | MAX8878EZK30+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Low-Noise, Low-Dropout, 150mA Linear Regulators with '2982 Pinout |
| 文件： | 总10页 (文件大小：391K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-1301; Rev 2; 1/01
Low-Noise, Low-Dropout, 150mA Linear
Regulators with '2982 Pinout
__________________General Description
____________________________Features
The MAX8877/MAX8878 low-noise, low-dropout linear
regulators operate from a 2.5V to 6.5V input and deliver
up to 150mA. These devices are pin-compatible with
the industry-standard '2982 and offer an improved
ꢀ Pin-Compatible with the Industry-Standard '2982
ꢀ Low Output Noise: 30µV
RMS
ꢀ Low 55mV Dropout at 50mA Output
dropout voltage. Typical output noise is 30µV
, and
RMS
(165mV at 150mA output)
typical dropout is only 165mV at 150mA. The output
voltage is preset to voltages in the range of 1.5V to
5.0V, in 100mV increments.
ꢀ Low 85µA No-Load Supply Current
ꢀ Low 100µA Operating Supply Current
Designed with an internal P-channel MOSFET pass
transistor, the MAX8877/MAX8878 maintain a low
100µA supply current, independent of the load current
and dropout voltage. Other features include a 10nA
logic-controlled shutdown mode, short-circuit and ther-
mal-shutdown protection, and reverse battery protec-
tion. The MAX8878 also includes an auto-discharge
function, which actively discharges the output voltage
to ground when the device is placed in shutdown. Both
devices come in regular and thin 5-pin SOT23 pack-
ages.
(even in dropout)
ꢀ Thermal-Overload and Short-Circuit Protection
ꢀ Reverse Battery Protection
ꢀ Output Current Limit
ꢀ Preset Output Voltages ( 1.4% Accuracy)
ꢀ 10nA Logic-Controlled Shutdown
________________________Applications
_________________Ordering Information
Cellular Telephones
Cordless Telephones
PCS Telephones
PCMCIA Cards
TEMP.
RANGE
PART**
PIN-PACKAGE
MAX8877C/Dxy
MAX8877EUKxy-T
MAX8877EZKxy-T
MAX8878C/Dxy
MAX8878EUKxy-T
MAX8878EZKxy-T
0°C to +70°C Dice*
-40°C to +85°C 5 SOT23-5 Regular
-40°C to +85°C 5 SOT23-5 Thin
0°C to +70°C Dice*
Modems
Hand-Held Instruments
Palmtop Computers
Electronic Planners
-40°C to +85°C 5 SOT23-5 Regular
-40°C to +85°C 5 SOT23-5 Thin
*Dice are tested at T = +25°C only.
A
**xy is the output voltage code (see Expanded Ordering
Information table at end of data sheet).
____________Typical Operating Circuit
_____________________Pin Configuration
TOP VIEW
INPUT
OUTPUT
2.5V TO 6.5V
PRESET
IN
OUT
1.5V TO 5.0V
150mA
1
2
3
5
4
OUT
BP
IN
GND
C
C
OUT
3.3µF
IN
1µF
MAX8877
MAX8878
MAX8877
MAX8878
ON
SHDN
OFF
BP
SHDN
GND
C
BP
0.01µF
SOT23-5
REGULAR AND THIN
________________________________________________________________ Maxim Integrated Products
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Low-Noise, Low-Dropout, 150mA Linear
Regulators with '2982 Pinout
ABSOLUTE MAXIMUM RATINGS
IN to GND....................................................................-7V to +7V
Output Short-Circuit Duration ............................................Infinite
SHDN to GND..............................................................-7V to +7V
SHDN to IN...............................................................-7V to +0.3V
SOT23-5 Thin (derate 9.1mW/°C above +70°C)..........727mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
θ
θ
(Regular)..................................................................140°C/W
JB
(Thin)........................................................................110°C/W
OUT, BP to GND..........................................-0.3V to (V + 0.3V)
JB
IN
Storage Temperature.........................................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Continuous Power Dissipation (T = +70°C)
SOT23-5 Regular (derate 7.1mW/°C above +70°C)....571mW
A
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. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V = V
+ 0.5V or 2.5V (whichever is greater), T = -40°C to +85°C, unless otherwise noted. Typical values are at T =
IN
OUT(NOMINAL)
A
A
+25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
2.5
TYP
MAX
6.5
UNITS
Input Voltage
V
V
IN
I
= 0.1mA, T = +25°C, V ≥ 2.5V
OUT
-1.4
1.4
OUT
A
I
= 0.1mA to 120mA, T = -40°C to +85°C,
A
≥ 2.5V
OUT
-3
-3
2
3
V
OUT
OUT
OUT
Output Voltage Accuracy
%
I
= 0.1mA, T = +25°C, V
< 2.5V
OUT
A
I
= 0.1mA to 120mA, T = -40°C to +85°C,
A
-3.5
3.5
V
< 2.5V
OUT
Maximum Output Current
Current Limit
150
160
mA
mA
I
390
85
LIM
No load
180
120
Ground Pin Current
I
µA
Q
I
I
I
I
= 150mA
= 1mA
100
1.1
55
OUT
OUT
OUT
OUT
Dropout Voltage (Note 2)
mV
= 50mA
= 150mA
165
V
= 2.5V or (V
= 1mA
+ 0.1V) to 6.5V,
IN
OUT
Line Regulation
∆V
∆V
-0.15
0
0.15
0.04
%/V
LNR
I
OUT
Load Regulation
Output Voltage Noise
SHUTDOWN
I
= 0.1mA to 120mA, C
= 1µF
0.01
30
%/mA
µVRMS
LDR
OUT
OUT
C
C
= 10µF
OUT
OUT
f = 10Hz to 100kHz,
= 0.01µF
e
n
C
BP
= 100µF
20
V
V
V
= 2.5V to 5.5V
= 2.5V to 5.5V
2.0
V
IH
IN
IN
SHDN Input Threshold
V
0.4
IL
T
A
T
A
T
A
T
A
T
A
T
A
= +25°C
0.01
0.5
100
SHDN Input Bias Current
I
V
V
= V
µA
µA
SHDN
SHDN
IN
= +85°C
= +25°C
0.01
0.2
1
Shutdown Supply Current
I
= 0V
OUT
Q(SHDN)
= +85°C
= +25°C
30
150
300
Shutdown Exit Delay
(Note 3)
C
C
= 0.1µF
BP
µs
= 1µF, no load
OUT
= -40°C to +85°C
Resistance Shutdown Discharge
MAX8878 only
300
Ω
2
_______________________________________________________________________________________
Low-Noise, Low-Dropout, 150mA Linear
Regulators with '2982 Pinout
ELECTRICAL CHARACTERISTICS (continued)
(V = V
+ 0.5V or 2.5V (whichever is greater), T = -40°C to +85°C, unless otherwise noted. Typical values are at T =
IN
OUT(NOMINAL)
A
A
+25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
THERMAL PROTECTION
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
T
155
15
°C
°C
SHDN
∆T
SHDN
Note 1: Limits are 100% production tested at T = +25°C. Limits over the operating temperature range are guaranteed through
A
correlation using Statistical Quality Control (SQC) Methods.
Note 2: The dropout voltage is defined as V - V
, when V
is 100mV below the value of V
for V = V
+ 0.5V. (Only
IN
OUT
OUT
OUT
IN
OUT
applicable for V
Note 3: Time needed for V
= +2.5V to +5V.)
OUT
to reach 95% of final value.
OUT
__________________________________________Typical Operating Characteristics
(V = V
IN
+ 0.5V or 2.5V (whichever is greater), C = 1µF, C
= 1µF, C = 0.01µF, T = +25°C, unless otherwise
OUT BP A
OUT(NOMINAL)
IN
noted.)
OUTPUT VOLTAGE vs. LOAD CURRENT
(MAX887_EUK25)
OUTPUT VOLTAGE vs. LOAD CURRENT
(MAX887_EUK50)
GROUND PIN CURRENT
vs. LOAD CURRENT
2.60
2.55
2.50
2.45
2.40
5.2
5.1
5.0
4.9
4.8
110
105
100
95
MAX887_EUK50
MAX887_EUK25
90
85
80
75
70
65
60
0
50
100
150
0
50
100
150
0
50
100
150
LOAD CURRENT (mA)
LOAD CURRENT (mA)
LOAD CURRENT (mA)
GROUND PIN CURRENT vs. INPUT VOLTAGE
(MAX887_EUK50)
GROUND PIN CURRENT vs. INPUT VOLTAGE
(MAX887_EUK25)
OUTPUT VOLTAGE vs. INPUT VOLTAGE
120
100
80
60
40
20
0
6
5
4
3
2
1
0
120
100
80
60
40
20
0
I
= 50mA
LOAD
NO LOAD
I
= 50mA
LOAD
MAX887_EUK50
NO LOAD
NO LOAD
MAX887_EUK25
0
1
2
3
4
5
6
0
1
2
3
4
5
6
0
1
2
3
4
5
6
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
_______________________________________________________________________________________
3
Low-Noise, Low-Dropout, 150mA Linear
Regulators with '2982 Pinout
Typical Operating Characteristics (continued)
(V = V
IN
+ 0.5V or 2.5V (whichever is greater), C = 1µF, C
= 1µF, C = 0.01µF, T = +25°C, unless otherwise
OUT(NOMINAL)
IN
OUT BP A
noted.)
OUTPUT VOLTAGE vs. TEMPERATURE
(MAX887_EUK25)
GROUND PIN CURRENT
vs. TEMPERATURE
OUTPUT VOLTAGE vs. TEMPERATURE
(MAX887_EUK50)
2.60
2.55
2.50
2.45
2.40
5.2
5.1
5.0
4.9
4.8
200
180
160
140
120
100
80
I
= 50mA
I
= 50mA
I
= 50mA
LOAD
LOAD
LOAD
MAX887_EUK50
MAX887_EUK25
60
40
20
0
-40 -20
0
20
40
60
80 100
-40 -20
0
20
40
60
80 100
-40 -20
0
20
40
60
80 100
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
DROPOUT VOLTAGE vs. LOAD CURRENT
(MAX887_EUK25)
DROPOUT VOLTAGE vs. LOAD CURRENT
(MAX887_EUK50)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
70
60
50
40
30
20
10
0
250
200
150
100
50
200
150
100
50
T
A
= +85°C
C
OUT
= 10µF
T
A
= +85°C
T
A
= +25°C
T
A
= +25°C
T
A
= -40°C
T
A
= -40°C
C
OUT
= 1µF
I
= 50mA
LOAD
C
BP
= 0.1µF
0
0
0
20 40 60 80 100 120 140 160
LOAD CURRENT (mA)
0.01
0.1
1
10
100
1000
0
20 40 60 80 100 120 140 160
LOAD CURRENT (mA)
FREQUENCY (kHz)
OUTPUT NOISE SPECTRAL DENSITY
vs. FREQUENCY
OUTPUT NOISE vs. LOAD CURRENT
OUTPUT NOISE vs. BP CAPACITANCE
10
80
70
60
50
40
30
20
10
0
60
50
40
30
20
10
0
C
I
= 10µF
= 10mA
C
I
= 0.01µF
LOAD
OUT
LOAD
BP
= 10mA
MAX887_EUK50
f = 10Hz to 100kHz
1
MAX887_EUK30
MAX887_EUK25
MAX887_EUK50
MAX887_EUK30
C
OUT
= 1µF
0.1
C
C
= 10µF
MAX887_EUK25
OUT
C
OUT
= 10µF
= 0.01µF
BP
f = 10Hz to 100kHz
0.01
0
1
10
FREQUENCY (kHz)
100
1000
1
10
100
1000
0.001
0.01
BP CAPACITANCE (µF)
0.1
LOAD CURRENT (mA)
4
_______________________________________________________________________________________
Low-Noise, Low-Dropout, 150mA Linear
Regulators with '2982 Pinout
Typical Operating Characteristics (continued)
(V = V
IN
+ 0.5V or 2.5V (whichever is greater), C = 1µF, C
IN
= 1µF, C = 0.01µF, T = +25°C, unless otherwise
OUT(NOMINAL)
OUT
BP
A
noted.)
REGION OF STABLE C
ESR
OUT
vs. LOAD CURRENT
OUTPUT NOISE 10Hz TO 100kHz
100
10
1
C
OUT
= 10µF
V
OUT
C
OUT
= 1µF
50µV/div
STABLE REGION
0.1
0.01
0
100
LOAD CURRENT (mA)
150
1ms/div
MAX887_EUK25, C
= 10µF, I = 10mA, C = 0.1µF
LOAD BP
OUT
LOAD-TRANSIENT RESPONSE
NEAR DROPOUT
LINE-TRANSIENT RESPONSE
LOAD-TRANSIENT RESPONSE
MAX8877-18
MAX8877-20
MAX8877-19
3.01V
4V
3V
3.01V
3.00V
2.99V
V
IN
V
OUT
3.00V
2.99V
V
OUT
3.001V
3.000V
2.999V
V
OUT
50mA
50mA
I
LOAD
I
LOAD
10µs/div
MAX887_EUK30, V = V
10µs/div
MAX887_EUK30, V = V
100µs/div
= 50mA
+ 0.1V,
OUT
+ 0.5V,
OUT
IN
IN
MAX887_EUK30, I
LOAD
C
= 10µF, I
= 0mA TO 50mA
C
= 10µF, I
= 0mA TO 50mA
IN
LOAD
IN
LOAD
MAX887_EUK25
SHUTDOWN EXIT DELAY
MAX887_EUK50
SHUTDOWN EXIT DELAY
ENTERING SHUTDOWN
MAX8877-21
MAX8877-22
MAX8877-23
V
V
SHDN
V
SHDN
SHDN
2V
0V
2V
0V
2V
C
BP
= 0.01µF
C
BP
= 0.01µF
0V
5V
V
OUT
V
OUT
2V
1V
0V
4V
C
BP
= 0.1µF
V
OUT
C
BP
= 0.1µF
2V
0V
0V
5µs/div
= 50mA
5µs/div
= 50mA
500µs/div
MAX8878, NO LOAD
MAX887_EUK25, I
MAX887_EUK50, I
LOAD
LOAD
_______________________________________________________________________________________
5
Low-Noise, Low-Dropout, 150mA Linear
Regulators with '2982 Pinout
______________________________________________________________Pin Description
PIN
NAME
FUNCTION
Regulator Input. Supply voltage can range from 2.5V to 6.5V. Bypass with a 1µF capacitor to GND
(see Capacitor Selection and Regulator Stability section).
1
IN
Ground. This pin also functions as a heatsink. Solder to a large pad or the circuit-board ground
plane to maximize power dissipation.
2
3
4
5
GND
SHDN
BP
Active-Low Shutdown Input. A logic low reduces the supply current to 10nA. On the MAX8878, a
logic low also causes the output voltage to discharge to GND. Connect to IN for normal operation.
Reference-Noise Bypass. Bypass with a low-leakage, 0.01µF ceramic capacitor for reduced noise at
the output.
Regulator Output. Sources up to 150mA. Bypass with a 1µF (<0.2Ω typical ESR) capacitor to GND
OUT
for V
≥ 2.5V and 3.3µF for V
< 2.5V.
OUT
OUT
reference voltage, the pass-transistor gate is pulled
lower, which allows more current to pass to the output
and increases the output voltage. If the feedback volt-
age is too high, the pass-transistor gate is pulled up,
allowing less current to pass to the output. The output
voltage is fed back through an internal resistor voltage
divider connected to the OUT pin.
_______________Detailed Description
The MAX8877/MAX8878 are low-noise, low-dropout,
low-quiescent-current linear regulators designed pri-
marily for battery-powered applications. The parts are
available with preset output voltages ranging from 1.5V
to 5V, in 100mV increments. These devices can supply
loads up to 150mA. As illustrated in Figure 1, the
MAX8877/MAX8878 consist of a 1.25V reference, error
amplifier, P-channel pass transistor, and internal feed-
back voltage divider.
An external bypass capacitor connected to the BP pin
reduces noise at the output. Additional blocks include a
current limiter, reverse battery protection, thermal sen-
sor, and shutdown logic. The MAX8878 also includes
an auto-discharge function, which actively discharges
the output voltage to ground when the device is placed
in shutdown mode.
The 1.25V bandgap reference is connected to the error
amplifier’s inverting input. The error amplifier compares
this reference with the feedback voltage and amplifies
the difference. If the feedback voltage is lower than the
REVERSE
BATTERY
PROTECTION
IN
SHDN
P
MOS DRIVER
WITH I
LIMIT
ERROR
AMP
SHUTDOWN
AND
POWER-ON
CONTROL
MAX8877
MAX8878
OUT
*
N
1.25V
REF
THERMAL
SENSOR
GND
* AUTO-DISCHARGE, MAX8878 ONLY
BP
Figure 1. Functional Diagram
_______________________________________________________________________________________
6
Low-Noise, Low-Dropout, 150mA Linear
Regulators with '2982 Pinout
P
= (T - T ) / (θ + θ
)
BA
Output Voltage
The MAX8877/MAX8878 are supplied with factory-set
output voltages from 1.5V to 5.0V, in 100mV increments.
Except for the MAX887_EUK29 and the MAX887_EUK32
(which have an output voltage preset at 2.84V and
3.15V, respectively), the two-digit suffix allows the cus-
tomer to choose the output voltage in 100mV increments.
For example, the MAX8877EUK33 has a preset output
voltage of 3.3V (see Expanded Ordering Information).
MAX
J
A
JB
where T - T is the temperature difference between
J
A
the MAX8877/MAX8878 die junction and the surround-
ing air, θ
(or θ ) is the thermal resistance of the
JB
JC
package, and θ is the thermal resistance through the
BA
printed circuit board, copper traces, and other materi-
als to the surrounding air.
The GND pin of the MAX8877/MAX8878 performs the
dual function of providing an electrical connection to
ground and channeling heat away. Connect the GND
pin to ground using a large pad or ground plane.
Internal P-Channel Pass Transistor
The MAX8877/MAX8878 feature a 1.1Ω typical
P-channel MOSFET pass transistor. This provides sever-
al advantages over similar designs using PNP pass tran-
sistors, including longer battery life. The P-channel
MOSFET requires no base drive, which reduces quies-
cent current considerably. PNP-based regulators waste
considerable current in dropout when the pass transistor
saturates. They also use high base-drive currents under
large loads. The MAX8877/MAX8878 do not suffer from
these problems and consume only 100µA of quiescent
current whether in dropout, light-load, or heavy-load
applications (see the Typical Operating Characteristics).
Reverse Battery Protection
The MAX8877/MAX8878 have a unique protection
scheme that limits the reverse supply current to 1mA
when either V or V
falls below ground. Their cir-
SHDN
IN
cuitry monitors the polarity of these two pins and discon-
nects the internal circuitry and parasitic diodes when the
battery is reversed. This feature prevents device damage.
Noise Reduction
An external 0.01µF bypass capacitor at BP, in conjunc-
tion with an internal 200kΩ resistor, creates a 80Hz low-
pass filter for noise reduction. The MAX8877/MAX8878
Current Limit
The MAX8877/MAX8878 include a current limiter, which
monitors and controls the pass transistor’s gate voltage,
limiting the output current to 390mA. For design purposes,
consider the current limit to be 160mA minimum to 500mA
maximum. The output can be shorted to ground for an
indefinite amount of time without damaging the part.
exhibit 30µV
of output voltage noise with C
= 10µF. This is negligible in most
=
BP
RMS
0.01µF and C
OUT
applications. Start-up time is minimized by a power-on
circuit that pre-charges the bypass capacitor. The
Typical Operating Characteristics section shows
graphs of Noise vs. BP Capacitance, Noise vs. Load
Current, and Output Noise Spectral Density.
Thermal-Overload Protection
Thermal-overload protection limits total power dissipa-
tion in the MAX8877/MAX8878. When the junction tem-
____________Applications Information
Capacitor Selection and
Regulator Stability
perature exceeds T = +155°C, the thermal sensor
J
signals the shutdown logic, turning off the pass transis-
tor and allowing the IC to cool. The thermal sensor will
turn the pass transistor on again after the IC’s junction
temperature cools by 15°C, resulting in a pulsed output
during continuous thermal-overload conditions.
Normally, use a 1µF capacitor on the MAX8877/
MAX8878’s input and a 1µF to 10µF capacitor on the out-
put. Larger input capacitor values and lower ESRs pro-
vide better supply-noise rejection and line-transient
response. Reduce noise and improve load-transient
response, stability, and power-supply rejection by using
large output capacitors. For stable operation over the full
temperature range and with load currents up to 150mA, a
Thermal-overload protection is designed to protect the
MAX8877/MAX8878 in the event of fault conditions. For
continual operation, do not exceed the absolute maxi-
mum junction-temperature rating of T = +150°C.
1µF (min) ceramic capacitor is recommended for V
≥
J
OUT
2.5V and 3.3µF and for V
< 2.5V.
OUT
Operating Region and Power Dissipation
The MAX8877/MAX8878’s maximum power dissipation
depends on the thermal resistance of the case and circuit
board, the temperature difference between the die junc-
tion and ambient air, and the rate of air flow. The power
Note that some ceramic dielectrics exhibit large capaci-
tance and ESR variation with temperature. With
dielectrics such as Z5U and Y5V, it may be necessary to
increase the capacitance by a factor of 2 or more to
ensure stability at temperatures below -10°C. With X7R or
X5R dielectrics, 1µF should be sufficient at all operating
dissipation across the device is P = I
The maximum power dissipation is:
(V - V
).
OUT
OUT IN
temperatures for V
≥ 2.5V. A graph of the Region of
OUT
_______________________________________________________________________________________
7
Low-Noise, Low-Dropout, 150mA Linear
Regulators with '2982 Pinout
Stable C
ESR vs. Load Current is shown in the
two components of the output response: a DC shift
from the output impedance due to the load current
change, and the transient response. Typical transient
for a step change in the load current from 0mA to 50mA
is 12mV. Increasing the output capacitor’s value and
decreasing the ESR attenuates the overshoot.
OUT
Typical Operating Characteristics.
Use a 0.01µF bypass capacitor at BP for low output volt-
age noise. Increasing the capacitance will slightly
decrease the output noise, but increase the start-up time.
Values above 0.1µF provide no performance advantage
and are not recommended (see Shutdown Exit Delay
graphs in the Typical Operating Characteristics).
Input-Output (Dropout) Voltage
For output voltage greater than the minimum input volt-
age (2.5V), the regulator’s minimum input-output volt-
age differential (or dropout voltage) determines the
lowest usable supply voltage. In battery-powered sys-
tems, this will determine the useful end-of-life battery
voltage. Because the MAX8877/MAX8878 use a P-
channel MOSFET pass transistor, their dropout voltage
PSRR and Operation from
Sources Other than Batteries
The MAX8877/MAX8878 are designed to deliver low
dropout voltages and low quiescent currents in battery-
powered systems. Power-supply rejection is 63dB at
low frequencies and rolls off above 10kHz. See the
Power-Supply Rejection Ratio Frequency graph in the
Typical Operating Characteristics.
is a function of drain-to-source on-resistance (R
)
DS(ON)
multiplied by the load current (see Typical Operating
Characteristics).
When operating from sources other than batteries,
improved supply-noise rejection and transient response
can be achieved by increasing the values of the input
and output bypass capacitors, and through passive fil-
tering techniques. The Typical Operating Charac-
teristics show the MAX8877/MAX8878’s line- and load-
transient responses.
___________________Chip Information
TRANSISTOR COUNT: 247
Load-Transient Considerations
The MAX8877/MAX8878 load-transient response
graphs (see Typical Operating Characteristics) show
SUBSTRATE CONNECTED TO GND
_
Expanded Ordering Information
OUTPUT VOLTAGE (xy) CODE
SOT TOP MARK
PRESET
OUTPUT
VOLTAGE (V)
MAX8877
REGULAR
MAX8877
THIN
MAX8878
REGULAR
MAX8878
THIN
REGULAR SOT23
THIN SOT23
MAX887_EUK15-T
MAX887_EUK18-T
MAX887_EUK25-T
MAX887_EUK28-T
MAX887_EUK29-T
MAX887_EUK30-T
MAX887_EUK32-T
MAX887_EUK33-T
MAX887_EUK36-T
MAX887_EUK50-T
MAX887_EZK15-T
MAX887_EZK18-T
MAX887_EZK25-T
MAX887_EZK28-T
MAX887_EZK29-T
MAX887_EZK30-T
MAX887_EZK32-T
MAX887_EZK33-T
MAX887_EZK36-T
MAX887_EZK50-T
1.50
1.80
2.50
2.80
2.84
3.00
3.15
3.30
3.60
5.00
x.y0
ADRG
ADQT
ACBM
ACBN
ACBO
ACBP
ACBQ
ACBR
ACDB
ACBS
—
AAAA
AAAB
AAAC
AAAD
ADPM
AAAE
AAAF
AAAG
AAAH
AAAI
ADQV
ADRH
ACBT
ACBU
ACBV
ACBW
ACBX
ACBY
ACDC
ACBZ
—
AAAJ
AAAK
AAAL
AAAM
ADPO
AAAN
AAAO
AAAP
AAAQ
AAAR
—
Other xy***
—
***Other xy between 1.5V and 5.0V are available in 100mV increments. Contact factory for other versions. Minimum order quantity is 25,000 units.
8
_______________________________________________________________________________________
Low-Noise, Low-Dropout, 150mA Linear
Regulators with '2982 Pinout
Package Information
_______________________________________________________________________________________
9
Low-Noise, Low-Dropout, 150mA Linear
Regulators with '2982 Pinout
Package Information (continued)
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2001 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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