Datasheet

MAX5008
Regulated 5V USB Charge Pump with
Programmable Current Limit
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= SHDN = 3V, C
IN
= 4.7µF, C
X
= 0.68µF, C
EXT
= 6.8µF, C
OUT
= 4.7µF, R
CS
= 0.4Ω, T
A
= 0°C to +70°C, unless otherwise noted.
Typical values are at T
A
= +25°C.)
Note 1: When the input exceeds 4.25V, the power dissipation on the chip exceeds the maximum rating if the output current is 125mA.
Note 2: The MIN/MAX limits are 100% production tested at +25°C and +70°C, and guaranteed by design at 0°C.
Note 3: I
OUT
is output current flowing from C
EXT
.
Note 4: The delay from the fault event to the assertion of FAULT. Fault delays are specified with either a current fault or a voltage
fault, but not both simultaneously.
Note 5: The delay from the removal of the fault event to the deassertion of FAULT.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Thermal Shutdown
Junction Temperature
150
°C
Thermal Shutdown Hysteresis 30 °C
Typical Operating Characteristics
(V
IN
= 3V, C
IN
= 4.7µF, C
X
= 0.47µF, C
OUT
= 4.7µF, C
EXT
= 4.7µF, R
CS
= 0.4Ω, T
A
= +25°C, unless otherwise noted.)
NO-LOAD SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX5008 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5.04.54.03.53.0
0.5
1.0
1.5
2.0
0
2.5 5.5
OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX5008 toc02
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
10010
4.7
4.9
5.1
5.3
5.5
4.5
1 1000
V
IN
= 2.9V
V
IN
= 5.0V
V
IN
= 3.3V
OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
MAX5008 toc03
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE (V)
54321
1
2
3
4
5
6
0
06
I
LOAD
= 100mA