MAX682ESA Maxim Integrated Products, MAX682ESA Datasheet - Page 5
MAX682ESA
Manufacturer Part Number
MAX682ESA
Description
Charge Pumps 3.3VIn to Reg 5Vout Charge Pump
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX682ESA.pdf
(12 pages)
Specifications of MAX682ESA
Function
Step Up
Output Voltage
5.05 V
Output Current
250 mA
Maximum Operating Temperature
+ 85 C
Package / Case
SOIC-8 Narrow
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
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(Circuit of Figure 5, V
A: OUTPUT VOLTAGE: SKIP = HIGH, R
B: SHDN VOLTAGE: 1V/div
PIN
1
2
3
4
5
6
7
8
NAME
SHDN
PGND
GND
CXN
OUT
SKIP
CXP
SHUTDOWN TIMING
IN
100 s/div
_______________________________________________________________________________________
IN
When SKIP = low, the regulator operates in low-quiescent-current skip mode. When SKIP = high, the
regulator operates in constant-frequency mode, minimizing output ripple and noise. SKIP must be tied
high for input voltages above 3.6V.
Shutdown Input. Drive SHDN through an external resistor. When SHDN = low, the device turns off. When
current is sourced into SHDN through R
oscillator’s switching frequency. R
Input Supply Pin. Can range from 2.7V to 5.5V for SKIP = high, and 2.7V to 3.6V for SKIP = low. Bypass to
PGND with a suitable value capacitor (see Capacitor Selection section).
Ground Pin. Connect to PGND through a short trace.
Power Ground Pin
Negative Terminal of the Charge-Pump Transfer Capacitor
Positive Terminal of the Charge-Pump Transfer Capacitor
Fixed 5V Power Output. Bypass to PGND with output filter capacitor.
= 3.3V, component values from Tables 2 and 3, T
L
= 5V / I
MAX682 TOC18
MAX
, 2V/div
3.3V-Input to Regulated 5V-Output
A
B
Typical Operating Characteristics (continued)
A: INPUT VOLTAGE: V
B: OUTPUT VOLTAGE: SKIP = HIGH, I
I
LOAD
= 250mA, 50mV/div, MAX682
LINE-TRANSIENT RESPONSE
EXT
(kΩ) = 45000 (V
EXT
IN
2ms/div
= 3.1V TO 3.6V, 500mV/div
, the device activates, and the SHDN pin input current sets the
FUNCTION
A
SHDN
= +25°C, unless otherwise noted.)
= 22 A,
IN
MAX682 TOC20
- 0.69V) / f
A
B
OSC
Charge Pumps
A: LOAD CURRENT: I
B: OUTPUT VOLTAGE: SKIP = HIGH, I
(kHz).
100mV/div, MAX682
LOAD-TRANSIENT RESPONSE
Pin Description
LOAD
2ms/div
= 5mA TO 250mA, 500mA/div
SHDN
= 22 A,
MAX682 TOC19
5
A
B