MAX1838EEE+ Maxim Integrated Products, MAX1838EEE+ Datasheet - Page 7

• Manufacturer Part Number: MAX1838EEE+
• Description: IC SW USB DUAL W/FB 16-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1838EEE+

• Applications: USB, Peripherals
• Voltage - Supply: 4 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -

(Circuit of Figure 2, V
11, 12
13, 14
PIN
1, 8
3, 6
4, 5
10
2
7
9
SWITCH TURN-ON TIME, C
OUTB1, OUTB2
OUTA1, OUTA2
AUXA, AUXB
INA, INB
FAULTB
NAME
1ms/div
ADJB
GND
SEL
ON
_______________________________________________________________________________________
IN_
= 5V, T
OUT
Dual USB Switch with Fault Blanking
MAX1838 toc17
A
= 1µF
Ground. Connect both GND pins together.
Select Input. Control input to select from either V
power from IN source, low for power from AUX source.
Auxiliary Input. Connect both AUX pins together and bypass with a 0.1µF capacitor to ground.
Load conditions may require additional bulk capacitance to maintain AUX voltage regulation.
Power Input. Connect both IN pins together and bypass with a 0.1µF capacitor to GND. Load
conditions may require additional bulk capacitance to maintain the IN voltage regulation.
Control Input. A logic low at ON turns on the device. A logic high shuts off both outputs and all
power to internal circuits. Driving ON higher than IN does not cause damage.
Fault Indicator Output for Channel B. This open-drain output goes low when channel B is in
thermal shutdown or in undervoltage lockout or in a sustained (>20ms) current-limit or short-circuit
condition.
Current-Limit Adjust for Channel B. When operating from auxiliary input, adjust the current limit by
connecting a resistor from ADJB to GND as shown in Programmable Current Limit.
Power Output B. Connect both OUTB_ pins together. Connect a 1µF or greater capacitor from
OUTB_ to ground. Load condition may require additional bulk capacitance.
Power Output A. Connect both OUTA_ pins together. Connect a 1µF or greater capacitor from
OUTA_ to ground. Load condition may require additional bulk capacitance.
= +25°C, unless otherwise noted.)
5V
V
0
5V
4V
3V
V
2V
1V
0
ON
OUT_
Typical Operating Characteristics (continued)
SWITCH TURN-OFF TIME,
C
OUT
= 1µF R
1ms/div
OUT
= 10Ω
MAX1838 toc18
FUNCTION
IN_
5V
V
0
5V
4V
3V
V
2V
1V
0
ON
OUT_
or V
AUX_
and Autoreset
for both outputs. Pull SEL high for
START-UP TIME INTO 10Ω LOAD
Pin Description
1ms/div
MAX1838 toc19
2V
0
0.5A
0
5V
V
0
4V
V
I
OUT_
ON
OUT_
7