MAX1831 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
MFG CO.
MAX1831 Datasheet PDF : 13 Pages
| |||
3A, 1MHz, Low-Voltage, Step-Down Regulators with
Synchronous Rectification and Internal Switches
Typical Operating Characteristics (continued)
(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
NORMALIZED OUTPUT ERROR
vs. OUTPUT CURRENT
0.10
0.05
0
-0.05
-0.10 VIN = 5.0V
VOUT = 1.5V
-0.15 L = 1.5µH
-0.20
VIN = 3.3V
VOUT = 1.5V
L = 1.5µH
-0.25
0.001 0.01
0.1
1
10
OUTPUT CURRENT (A)
SWITCHING FREQUENCY
vs. OUTPUT CURRENT
1200
VIN = 5.0V,
1000
VOUT = 1.5V, L = 1.5µH
800
600
VIN = 3.3V,
400
VOUT = 1.5V, L = 1.5µH
200
0
0 0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT CURRENT (A)
STARTUP AND SHUTDOWN
MAX1830 toc06
IIN
1A/div
VSHDN
5V/div
400µs/div
VIN = 3.3V, VOUT = 1.5V,
ROUT = 0.5Ω, RTOFF = 82kΩ, L = 1.5µH
VOUT
1V/div
LOAD-TRANSIENT RESPONSE
MAX1830 toc07
VOUT
50mV/div
AC-COUPLE
0
10µs/div
VIN = 3.3V, VOUT = 1.5V,
RTOFF = 82kΩ, L = 1.5µH, IOUT = 0.1A TO 3A
IOUT
2A/div
LINE-TRANSIENT RESPONSE
MAX1830 toc08
VIN
2V/div
20µs/div
VOUT = 1.8V, IOUT = 1A,
RTOFF = 75kΩ, L = 1.5µH
VOUT
50mV/div
AC-COUPLED
_______________________________________________________________________________________ 5
Share Link: 