Maxim MAX1658ESA, MAX1658C-D, MAX1659ESA, MAX1659C-D Datasheet
_______________General Description
The MAX1658/MAX1659 linear regulators maximize battery life by combining ultra-low supply currents and low
dropout voltages. They feature Dual Mode™ operation,
which presets the output to 3.3V (MAX1658) or 5V
(MAX1659), or permits it to be adjusted between 1.25V
and 16V. The regulator supplies up to 350mA, with a
typical dropout of 650mV for the MAX1658 and 490mV
for the MAX1659. With their P-channel MOSFET pass
transistor, these devices maintain a low quiescent current from zero output current to the full 350mA, even in
dropout. They support input voltages ranging from 2.7V
to 16.5V.
The MAX1658/MAX1659 feature a 1µA shutdown mode,
reverse battery protection, short-circuit protection, and
thermal shutdown. They are available in a special highpower (1.2W), 8-pin SO package designed specifically
for compact applications.
________________________Applications
Digital Cordless Phones
PCS Phones
Cellular Phones
PCMCIA Cards
Modems
Hand-Held Instruments
Palmtop Computers
Electronic Planners
____________________________Features
♦ Wide Input Voltage Range: 2.7V to 16.5V
♦ Low, 490mV Dropout at 350mA Output Current
(MAX1659)
♦ 30µA Supply Current
♦ 1µA Max Shutdown Current
♦ High-Power (1.2W) 8-Pin SO Package
♦ Dual Mode Operation Output:
Fixed 3.3V (MAX1658)
Fixed 5.0V (MAX1659)
or Adjustable (1.25V to 16V)
♦ Thermal Overload Protection
♦ Current-Limit Protection
♦ Reverse Battery Protection
MAX1658/MAX1659
350mA, 16.5V Input,
Low-Dropout Linear Regulators
________________________________________________________________
Maxim Integrated Products
1
IN
OUTOUT
1
2
87GND
INSHDN
IN
SET
SO
TOP VIEW
3
4
6
5
MAX1658
MAX1659
__________________Pin Configuration
MAX1658
MAX1659
IN
SHDN
OFF
ON
INPUT
UP TO 16.5V
OUTPUT
3.3V OR 5V,
OR ADJ. (DOWN TO 1.25V);
UP TO 350mA
GND SET
OUT
__________Typical Operating Circuit
19-1263; Rev 0; 7/97
PART
MAX1658C/D
MAX1659C/D
0°C to +70°C
0°C to +70°C
TEMP. RANGE PIN-PACKAGE
Dice*
Dice*
______________Ordering Information
Dual Mode is a trademark of Maxim Integrated Products.
MAX1658ESA -40°C to +85°C 8 SO
MAX1659ESA -40°C to +85°C 8 SO
*
Dice are tested at TA= +25°C, DC parameters only.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
MAX1658/MAX1659
350mA, 16.5V Input,
Low-Dropout Linear Regulators
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VIN= 5V (MAX1658), VIN= 6V (MAX1659); C
OUT
= 10µF; SHDN = IN; TA= T
MIN
to T
MAX
; unless otherwise noted. Typical values are
at T
A
= +25°C.) (Note 2)
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.
IN to GND................................................................-17V to +17V
Continuous Output Current...............................................500mA
Output Short-Circuit Duration ............................................Infinite
SET, SHDN to GND.................................................-17V to +17V
OUT to GND................................................-0.3V to (VIN + 0.3V)
Continuous Power Dissipation (Note 1)
SO (derate 14.5mW/°C above +70°C) .............................1.2W
Operating Temperature Range
MAX1658ESA/MAX1659ESA............................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature Range (soldering, 10sec)..................+300°C
SET = GND,
0mA < I
LOAD
< 350mA
V
OUT
= 5.0V
SHDN ≤ 0.4V
SET = OUT
SHDN = GND or SHDN = IN
2.7V ≤ VIN≤ 16.5V
2.7V ≤ VIN≤ 16.5V
MAX1658, VIN= 5V to 16.5V
I
OUT
= 350mA
10Hz to 100kHz
(Note 3)
I
OUT
= 0mA to 350mA
CONDITIONS
µs120t
START
Shutdown Exit Time
µA0.1 1I
QSHDN
Shutdown Supply Current
µA0.1I
SHDN
Shutdown Input Bias Current
V2.0V
INHSHDN
Logic-High Input Threshold
V0.4V
INLSHDN
Logic-Low Input
mVp-p2.5e
n
Output Noise
%V
OUT
0V
OSH
Startup Overshoot
%/mA0.003∆V
LDR
Load Regulation
V
4.85 5.00 5.15
3.20 3.30 3.40
V
OUT
V2.7 16.5V
IN
Input Voltage Range
Output Voltage
0.03
mV
490 875
∆V
DO
Dropout Voltage (Note 4) 650 1500
2
V1.25 16
Regulated Output
Voltage Range
mA350I
OUT(MAX)
Maximum Output Current
mA900I
LIM
Current Limit
µA30 60I
Q
Supply Current
UNITSMIN TYP MAXSYMBOLPARAMETER
MAX1659, VIN= 6V to 16.5V
%/V
0.05
∆V
LNR
Line Regulation
MAX1658,
5V ≤ VIN≤ 16.5V
MAX1659,
6V ≤ VIN≤ 16.5V
I
OUT
= 1mA
MAX1658
MAX1659
SHUTDOWN
Note 1: See
Operating Region and Power Dissipation
section.
MAX1658/MAX1659
350mA, 16.5V Input,
Low-Dropout Linear Regulators
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VIN= 5V (MAX1658), VIN= 6V (MAX1659); C
OUT
= 10µF; SHDN = IN; TA= T
MIN
to T
MAX
; unless otherwise noted. Typical values are
at T
A
= +25°C.) (Note 2)
Note 2: Specifications to -40°C are guaranteed by design, not production tested.
Note 3: Adjustable configuration only. V
IN
= 16.5V.
Note 4: The dropout voltage is defined as (V
IN
- V
OUT
) when V
OUT
is 100mV below the value of V
OUT
for VIN= V
OUT
+ 2V.
TA= +85°C (Note 3)
TA= +25°C (Note 3)
I
OUT
= 10µA (Note 3)
CONDITIONS
µA
0.1
I
SET
SET Input Leakage Current
0.01 0.025
V1.174 1.210 1.246V
SET
SET Reference Voltage
UNITSMIN TYP MAXSYMBOLPARAMETER
°C165T
SD
Thermal Shutdown Temperature
°C10∆T
SD
Thermal Shutdown Hysteresis
__________________________________________Typical Operating Characteristics
(VIN= 5V (MAX1658), VIN= 6V (MAX1659); SHDN = IN; SET = GND; CIN= 0.1µF; C
OUT
= 10µF tantalum; TA= +25°C; unless
otherwise noted.)
-10
-90
10 1000 10k100 100k
MAX1658
POWER-SUPPLY
REJECTION RATIO vs. FREQUENCY
-70
-80
MAX1658 TOC01
FREQUENCY (Hz)
PSRR (dB)
-60
-40
-50
-30
-20
VIN = 5.2V TO 5.4V
V
OUT
= 3.3V
-8
-72
10 1000 10k100 100k
MAX1659
POWER-SUPPLY
REJECTION RATIO vs. FREQUENCY
-56
-64
MAX1658 TOC03
FREQUENCY (Hz)
PSSR (dB)
-48
-32
-40
-24
-16
VIN = 6.15V TO 6.4V
V
OUT
= 5V
SET INPUT
THERMAL PROTECTION
MAX1658/MAX1659
350mA, 16.5V Input,
Low-Dropout Linear Regulators
4 _______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)
(VIN= 5V (MAX1658), VIN= 6V (MAX1659); SHDN = IN; SET = GND; CIN= 0.1µF; C
OUT
= 10µF tantalum; TA= +25°C; unless
otherwise noted.)
0.990
0.994
0.992
0.996
0.998
1.000
0
100
200 300 400
NORMALIZED OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX1658/59 TOC05
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE V
NOMINAL
/V
OUT
(V)
3.3V OUTPUT
5V OUTPUT
0
20
40
60
80
0 3 6 9 1512 18
MAX1658
SUPPLY CURRENT vs. INPUT VOLTAGE
MAX1658/59 TOC06
INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
IL = 100mA
IL = 0mA
V
OUT
= 3.3V
0
500
1000
1500
2000
0 3 6 9 12 15
DROPOUT VOLTAGE
vs. OUTPUT VOLTAGE
MAX1658/59 TOC07
OUTPUT VOLTAGE (V)
DROPOUT VOLTAGE (mV)
IL = 350mA
B
A
MAX1659
LINE-TRANSIENT RESPONSE
MAX1658/59TOC10
A: INPUT VOLTAGE (1V/div), VIN = 7V (HIGH), VIN = 6V (LOW)
B: OUTPUT VOLTAGE (100mV/div)
100µs/div
V
OUT
= 5.0V
0
200
400
600
100
300
500
700
800
0 100 200 300 400
DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX1658/59 TOC08
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
V
OUT
= 5.0V
V
OUT
= 3.3V
0
40
80
100
20
60
120
140
0 100 200 300 40050 150 250 350
QUIESCENT CURRENT
vs. LOAD CURRENT
MAX1658/59 TOC09
LOAD CURRENT (mA)
QUIESCENT CURRENT (µA)
B
A
100µs/div
MAX1658
LINE-TRANSIENT RESPONSE
MAX1658/59TOC11
A: INPUT VOLTAGE (1V/div), VIN = 6V (HIGH), VIN = 5V (LOW)
B: OUTPUT VOLTAGE (100mV/div)
V
OUT
= 3.3V
B
A
V
OUT
= 5V
MAX1659
LOAD-TRANSIENT RESPONSE
MAX1658/59TOC12
A: OUTPUT VOLTAGE (100mV/div)
B: I
OUT
= 300mA (HIGH), I
OUT
= 40mA (LOW)
200µs/div
B
A
V
OUT
= 3.3V
MAX1658
LOAD-TRANSIENT RESPONSE
MAX1658/59TOC13
A: OUTPUT VOLTAGE (100mV/div)
B: I
OUT
= 300mA (HIGH), I
OUT
= 40mA (LOW)
200µs/div
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