MAX60_C_A .......................................................0°C to +70°C
MAX60_E_A ................................................... -40°C to +85°C
MAX60_MJA ................................................. -55°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................ -65°C to +160°C
Lead Temperature (soldering, 10sec) ............................. +300°C
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
IN
= 6V (MAX603) or 4.3V (MAX604), C
IN
= C
OUT
= 10μF,
OFF
= V
IN
, SET = GND, T
J
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
J
= +25°C.) (Note 1)
PARAMETER
Input Voltage
SYMBOL
V
IN
CONDITIONS
MAX60_C
SET = OUT, R
L
= 1kΩ
I
OUT
= 20μA to 500mA,
6.0V < V
IN
< 11.5V
I
OUT
= 20μA to 300mA,
4.3V < V
IN
< 11.5V
I
OUT
= 1mA to 500mA
I
OUT
= 1mA to 300mA
Line Regulation
∆V
LNR
I
OUT
= 200mA
Dropout Voltage (Note 3)
∆V
DO
I
OUT
= 500mA
I
OUT
= 200mA
I
OUT
= 400mA
Quiescent Current
I
Q
3.0V ≤ V
IN
≤ 11.5V, SET = OUT
OFF
≤ 0.4V, R
L
= 1kΩ,
(V
OUT
+ 1V) ≤ V
IN
≤ 11.5V
MAX60_E
MAX60_M
MAX603
MAX604
MAX603C/E
MAX603M
MAX604
30
7
130
320
240
480
15
0.01
MIN
2.7
2.9
3.0
4.75
3.15
5.00
3.30
60
TYP
MAX
11.5
11.5
11.5
5.25
V
3.45
100
150
100
40
220
550
410
820
35
40
2
10
20
2
6
20
350
1200
160
10
mA
°C
°C
µA
µA
μA
mV
mV
mV
V
UNITS
Output Voltage (Note 2)
V
OUT
Load Regulation
∆V
LDR
(V
OUT
+ 0.5V) ≤ V
IN
≤ 11.5V, I
OUT
= 25mA
MAX603
MAX604
MAX60_C/E
MAX60_M
MAX60_C
MAX60_E
MAX60_M
MAX60_C
MAX60_E
MAX60_M
OFF Quiescent Current
I
Q OFF
Minimum Load Current
Foldback Current Limit
(Note 4)
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
I
OUT MIN
V
IN
= 11.5V, SET = OUT
V
OUT
< 0.8V
I
LIM
T
SD
∆T
SD
V
OUT
> 0.8V and V
IN
- V
OUT
> 0.7V
www.maximintegrated.com
Maxim Integrated │
2
MAX603/MAX604
5V/3.3V or Adjustable, Low-Dropout,
Low I
Q
, 500mA Linear Regulators
Electrical Characteristics (continued)
PARAMETER
Reverse-Current Protection
Threshold (Note 5)
Reverse Leakage Current
Start-Up Overshoot
Time Required to Exit Shutdown
Dual-Mode SET Threshold
SET Reference Voltage
SET Input Leakage Current
OUT Leakage Current
SYMBOL
∆V
RTH
(V
IN
= 6V (MAX603) or 4.3V (MAX604), C
IN
= C
OUT
= 10μF,
OFF
= V
IN
, SET = GND, T
J
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
J
= +25°C.) (Note 1)
CONDITIONS
V
OUT
= 4.5V
V
OUT
= 3.0V
V
IN
= 0V, V
OUT
= 4.5V
(MAX603) V
OUT
= 3.0V
(MAX604)
MAX603
MAX604
MAX60_C
MAX60_E
MAX60_M
2
200
80
150
1.16
MAX60_C
MAX60_E
MAX60_M
2.0
3.0
4.0
±0.01
250
±10
nA
μV
RMS
V
80
1.20
±0.01
0.01
1.24
±10
2
6
20
0.4
μA
30
MIN
TYP
6
6
0.01
MAX
20
20
10
20
100
%V
OUT
µs
mV
V
nA
µA
UNITS
mV
I
RVL
V
OSH
t
START
V
SET TH
V
SET
I
SET
I
OUT LKG
V
IL
OFF
R
L
= 1kΩ, C
OUT
= 10μF,
OFF
rise time ≤ 1μs
V
IN
= 9V, R
L
= 18Ω, V
OFF
switched from
0V to V
IN
, time from 0% to 95% of V
OUT
For internal feedback
For external feedback
SET = OUT, R
L
= 1kΩ
V
SET
= 1.5V or 0V
V
IN
= 11.5V, V
OUT
= 2V,
SET = OUT
Off
On, SET = OUT, V
IN
= 4V
On, SET = OUT, V
IN
= 6V
On, SET = OUT, V
IN
= 11.5V
V
OFF
= V
IN
or GND
10Hz to 10kHz, SET = OUT, R
L
= 1kΩ,
C
OUT
= 10μF
OFF
Threshold Voltage
V
IH
OFF
I
OFF
e
n
OFF
Input Leakage Current
Output Noise (Note 6)
Note 1:
Electrical specifications are measured by pulse testing and are guaranteed for a junction temperature (T
J
) equal to the
operating temperature range. C and E grade parts may be operated up to a T
J
of +125°. Expect performance similar to M
grade specifications. For T
J
between +125°C and +150°C, the output voltage may drift more.
Note 2:
(V
IN
- V
OUT
) is limited to keep the product (I
OUT
x (V
IN
- V
OUT
)) from exceeding the package power dissipation limits.
Note 3:
Dropout Voltage is (V
IN
- V
OUT
) when V
OUT
falls to 100mV below its nominal value at V
IN
= V
OUT
+ 2V. For example, the
MAX603 is tested by measuring the V
OUT
at V
IN
= 7V, then V
IN
is lowered until V
OUT
falls 100mV below the measured
value. The difference (V
IN
- V
OUT
) is then measured and defined as
∆V
DO
.
Note 4:
Foldback Current Limit was characterized by pulse testing to remain below the maximum junction temperature.
Note 5:
The Reverse-Current Protection Threshold is the output/input differential voltage (V
OUT
- V
IN
) at which reverse-current
protection switchover occurs and the pass transistor is turned off.
Note 6:
Noise is tested using a bandpass amplifier with two poles at 10Hz and two poles at 10kHz.
www.maximintegrated.com
Maxim Integrated │
3
MAX603/MAX604
5V/3.3V or Adjustable, Low-Dropout,
Low I
Q
, 500mA Linear Regulators
Typical Operating Characteristics
(V
IN
= 7V for MAX603, V
IN
= 5.3V for MAX604,
OFF
= V
IN
, SET = GND, C
IN
= C
OUT
= 10μF, R
L
= 1kΩ, T
J
= +25°C, unless otherwise noted.)
OUTPUT VOLTAGE AND
QUIESCENT CURRENT vs. SUPPLY VOLTAGE
MAX603, V
OUT
= 5V
603
OUTPUT VOLTAGE vs. LOAD CURRENT
MAX603/4-TOC-01
QUIESCENT CURRENT vs. LOAD CURRENT
MAX603/4-TOC-02
NORMALIZED OUTPUT VOLTAGE
QUIESCENT CURRENT (µA)
1.00
0.99
0.98
0.97
0.96
0.95
25
20
15
10
5
0
MAX603, V
IN
= 12V, V
OUT
= 10V
MAX603, V
IN
= 7V, V
OUT
= 5V
MAX604, V
IN
= 5.3V, V
OUT
= 3.3V
5
OUTPUT VOLTAGE (V)
4
3
2
1
22
20
MAX604, V
OUT
= 3.3V
I
Q
, MAX
18
16
14
12
10
8
X604
I
Q
, MA
V
OUT
= 3.3V, 5V, 10V
NORMALIZED TO
OUTPUT VOLTAGE
AT 1mA
0.1
1
10
100
700
LOAD CURRENT (mA)
UPWARD CURVE IS
THERMAL EFFECT
0.1
1
10
100
700
LOAD CURRENT (mA)
0
2
3
4
5
6
7
8
9
10 11 12
6
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE vs.
TEMPERATURE
MAX603/4-TOC-04
QUIESCENT CURRENT vs.
TEMPERATURE
MAX603/4-TOC-05
NORMALIZED OUTPUT VOLTAGE (%)
103
102
101
100
99
98
97
96
-55 -35 -15
5
25 45
65
QUIESCENT CURRENT (µA)
DROPOUT VOLTAGE (V)
20
15
10
5
0
MAX603
MAX604
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
R
=1
)
.2
Ω
MAX604
V
OUT
= 3.3V
MAX603
V
OUT
= 5V
=0
.65
Ω
N)
R
DS(O
N
(O
DS
R
)
ON
DS(
Ω
= 0.4
85 105 125
-55 -35 -15
5
25 45
65
85 105 125
0
MAX603, V
OUT
= 10V,
SET EXTERNALLY
0
100
200
300 400
500
600
700
LOAD CURRENT (mA)
TEMPERATURE (°C)
TEMPERATURE (°C)
10Hz TO 10kHz OUTPUT NOISE
LINE-TRANSIENT RESPONSE
A
OUTPUT NOISE (1mV/div)
B
MAX603
V
OUT
= 5V
10ms/div
MAX603
V
OUT
= 5V
t
R
= 10µs, t
F
= 70µs
2ms/div
A: V
IN
= 8V (HIGH), V
IN
= 7V (LOW)
B: OUTPUT VOLTAGE (50mV/div)
www.maximintegrated.com
Maxim Integrated │
4
MAX603/4-TOC-06
104
25
0.9
DROPOUT VOLTAGE vs. LOAD CURRENT
QUIESCENT CURRENT (µA)
MAX1603/4 TOC-03
1.01
30
6
24
MAX603/MAX604
5V/3.3V or Adjustable, Low-Dropout,
Low I
Q
, 500mA Linear Regulators
Typical Operating Characteristics (continued)
(V
IN
= 7V for MAX603, V
IN
= 5.3V for MAX604,
OFF
= V
IN
, SET = GND, C
IN
= C
OUT
= 10μF, R
L
= 1kΩ, T
J
= +25°C, unless otherwise noted.)
OVERSHOOT AND TIME
EXITING SHUTDOWN MODE
LOAD-TRANSIENT RESPONSE
B
A
A
5V
B
MAX603
V
OUT
= 5V
2ms/div
A: OUTPUT VOLTAGE (100mV/div)
B: I
OUT
= 500mA (HIGH), I
OUT
= 5mA (LOW)
500µs/div
A:
OFF
PIN VOLTAGE (1V/div)
RISE TIME = 13µs
B: MAX603 OUTPUT VOLTAGE (1V/div)
DELAY = 4.936ms, OVERSHOOT = 1%, RISE TIME = 55µs
0V
Pin Description
PIN
1
2, 3, 6, 7
4
5
8
NAME
IN
GND
OFF
SET
OUT
DESCRIPTION
Regulator Input. Supply voltage can range from 2.7V to 11.5V.
Ground. These pins function as heatsinks, only in the SOIC package. All GND pins must be soldered to the
circuit board for proper power dissipation. Connect to large copper pads or planes to channel heat from the IC.
Shutdown, active low. Switch logic levels in less than 1µs with the high level above the
OFF
threshold.
Feedback for Setting the Output Voltage. Connect to GND to set the output voltage to the preselected 3.3V
or 5V. Connect to an external resistor network for adjustable output
operation.
Regulator Output. Fixed or adjustable from
1.25V to 11.0V. Sources up to 500mA for input voltages above 4V.
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ADI Reference Circuit
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