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MAX8635ETA+T

P1-P3P4-P6P7-P9P10-P12P13-P13
MAX8633–MAX8636
Dual 300mA Pin-Programmable LDO
Linear Regulators
4 _______________________________________________________________________________________
Typical Operating Characteristics
(V
IN
= 3.8V, P = P1 = P2 = GND, I
OUT1, 2
= 70mA, C
OUT1
= 2.2µF, C
OUT2
= 2.2µF, C
BP
= 0.01µF, C
IN
= 2.2µF, and T
A
= +25°C,
unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(MAX8633ELA+)
MAX8633 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (μA)
54321
10
20
30
40
50
60
70
0
06
I
OUT1
= I
OUT2
= 70mA
I
OUT1
= I
OUT2
= 0mA
SUPPLY CURRENT vs. LOAD CURRENT
(MAX8635ELA+)
MAX8633 toc02
LOAD CURRENT (mA)
SUPPLY CURRENT (μA)
25020015010050
55
60
65
70
50
0 300
P1 = P2 = IN
SUPPLY CURRENT vs. TEMPERATURE
(MAX8633ELA+)
MAX8633 toc03
TEMPERATURE (°C)
SUPPLY CURRENT (μA)
603510-15
45
50
55
60
65
70
40
-40 85
I
OUT1
= I
OUT2
= 70mA
I
OUT1
= I
OUT2
= 0mA
DROPOUT VOLTAGE vs. LOAD CURRENT
(MAX8633ELA+)
MAX8633 toc04
LOAD CURRENT (mA)
DROPOUT VOLTAGE (V)
25020015010050
0.05
0.10
0.15
0.20
0.25
0.30
0
0 300
OUT1
DROPOUT VOLTAGE vs. OUT1 VOLTAGE
(MAX8633ELA+)
MAX8633 toc05
OUT1 VOLTAGE (V)
DROPOUT VOLTAGE (mV)
2.85
2.80
2.752.702.65
50
60
70
80
40
2.60 2.952.90
OUT1
P1 = P2 = IN
OUTPUT VOLTAGE ACCURACY
vs. TEMPERATURE (MAX8633ELA+)
MAX8633 toc06
TEMPERATURE (°C)
OUT1 VOLTAGE ACCURACY (%)
603510-15
-0.5
0
-1.5
-1.0
0.5
1.0
1.5
2.0
-2.0
-40 85
OUT1
PSRR vs. FREQUENCY
(MAX8636ELA+)
MAX8633 toc07
FREQUENCY (kHz)
PSRR (dB)
1010.1
30
40
10
20
50
60
70
0
0.01 100
R
OUT1
= 100Ω
P1 = IN
P2 = GND
CHANNEL-TO-CHANNEL ISOLATION
vs. FREQUENCY (MAX8636ELA+)
MAX8633 toc08
FREQUENCY (kHz)
PSRR (dB)
1010.1
30
40
10
20
50
60
70
0
0.01 100
R
OUT1
= 100Ω
OUTPUT SPECTRAL NOISE DENSITY
vs. FREQUENCY (MAX8636ELA+)
MAX8633 toc09
FREQUENCY (kHz)
NOISE DENSITY (nV/ Hz)
10 10010.1
100
1000
10,000
10
0.01 1000
OUT1
P1 = IN
P2 = GND
MAX8633–MAX8636
Dual 300mA Pin-Programmable LDO
Linear Regulators
_______________________________________________________________________________________ 5
Typical Operating Characteristics (continued)
(V
IN
= 3.8V, P = P1 = P2 = GND, I
OUT1, 2
= 70mA, C
OUT1
= 2.2µF, C
OUT2
= 2.2µF, C
BP
= 0.01µF, C
IN
= 2.2µF, and T
A
= +25°C,
unless otherwise noted.)
OUTPUT NOISE DC TO 100kHz
(MAX8636ELA+)
MAX8633 toc10
1ms/div
50μV/div
LINE TRANSIENT RESPONSE
(MAX8633ELA+)
MAX8633 toc11
40μs/div
0
1V/div
10mV/div
V
IN
AC
V
OUT1
3.8V
4.8V
MAX8633
I
OUT1
= 70mA
LOAD TRANSIENT
(MAX8633ELA+ OUT1 ILOAD = 1mA TO 70mA)
MAX8633 toc12
40μs/div
0
100mA/div
20mV/div
I
OUT1
AC
V
OUT1
1mA
70mA
MAX8633
V
IN
= 3.8V
LOAD TRANSIENT NEAR DROPOUT
(V
IN
= V
OUT
+ 0.1V, MAX8633ELA+ OUT1)
MAX8633 toc13
40μs/div
0
100mA/div
20mV/div
I
OUT1
AC
V
OUT1
1mA
70mA
MAX8633
V
IN
= V
OUT1
+ 0.1V
OUT1 AND OUT2 TURN-ON SEQUENCE
(MAX8633ELA+)
MAX8633 toc15
40μs/div
0
0
2V/div
2V/div
0
2V/div
OUT1
OUT2
MAX8633
P1 = P2 = GND
I
OUT1
= I
OUT2
= 70mA
SHDN
EXITING SHUTDOWN
(MAX8634ELA+)
MAX8633 toc16
40μs/div
0
0
2V/div
2V/div
2V/div
2V/div
OUT1
OUT2
MAX8634
P = IN
R
OUT1
= R
OUT2
= 100Ω
SHDN1
SHDN2
MAX8633–MAX8636
Dual 300mA Pin-Programmable LDO
Linear Regulators
6 _______________________________________________________________________________________
Pin Description
PIN
MAX8633 MAX8634 MAX8635 MAX8636
NAME FUNCTION
1111IN
Regulator Input. Supply voltage from 2.7V to 5.5V.
Bypass IN with a ceramic capacitor of at least 2.2µF to
GND (see the Capacitor Selection and Regulator
Stability section).
2——2SHDN
Shutdown Input, Active Low. Drive SHDN logic low to
shut down both regulators. Connect SHDN to IN or drive
logic high for normal operation (see the Power-On
Sequence (MAX8633/Max8636 Only) section).
—2 2—SHDN1
LDO1 Shutdown Input, Active Low. Drive SHDN1 logic
low to shut down OUT1. Connect SHDN1 to IN or drive
logic high for normal operation.
—3 5—SHDN2
LDO2 Shutdown Input, Active Low. Drive SHDN2 logic
low to shut down OUT2. Connect SHDN2 to IN or drive
logic high for normal operation.
3—3 3P2
Programming Input 2. The state of P1 and P2 selects
one of nine output-voltage options (see Tables 1, 3).
4—4 4P1
Programming Input 1. The state of P1 and P2 selects
one of nine output-voltage options (see Tables 1, 3).
—4———P
Programming Input. The state of P selects one of three
output-voltage options for the MAX8634 (see Table 2).
5———RESET
Reset Output, Active Low, Open Drain. RESET goes high
impedance 120ms (min) after V
OUT2
rises above 87% of
the nominal output voltage. RESET is forced logic low
when V
OUT2
is below 82.5% of the nominal output
voltage. Connect RESET to OUT1, OUT2, or another
voltage of V
IN
or lower with a pullup resistor.
—5—5BP
Reference Noise Bypass. Bypass BP to GND with a
0.01µF ceramic capacitor to reduce output noise.
6 6 6 6 GND Ground
7 7 7 7 OUT2
Regulator 2 Output. Guaranteed 300mA output current
(see the Calculating Maximum Output Power section).
Bypass OUT2 with a ceramic capacitor of at least 2.2µF
to GND (see the Capacitor Selection and Regulator
Stability section).
8 8 8 8 OUT1
Regulator 1 Output. Guaranteed 300mA output current
(see the Calculating Maximum Output Power section).
Bypass OUT1 with a ceramic capacitor of at least 2.2µF
to GND (see the Capacitor Selection and Regulator
Stability section).
EP* EP* EP* EP* EP
Exposed Paddle. Solder the exposed paddle to a large
pad or circuit-board ground plane to increase thermal
dissipation.
*
TDFN package only.
P1-P3P4-P6P7-P9P10-P12P13-P13

MAX8635ETA+T

Mfr. #:
Buy MAX8635ETA+T
Manufacturer:
Maxim Integrated
Description:
LDO Voltage Regulators Dual 300mA Pin-Prog LDO
Lifecycle:
New from this manufacturer.
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