Typical operating characteristics (continued) – Rainbow Electronics MAX1847 User Manual
Page 7
MAX1846/MAX1847
High-Efficiency, Current-Mode,
Inverting PWM Controller
_______________________________________________________________________________________
7
I
L
0
5V/div
1A/div
5V/div
V
OUT
ENTERING SHUTDOWN
MAX1846/7 toc16
APPLICATION CIRCUIT B
1ms/div
SHDN
I
L
LX
1A/div
10V/div
100mV/div
V
OUT
HEAVY-LOAD SWITCHING
WAVEFORM
MAX1846/7 toc17
APPLICATION CIRCUIT B
1
µs/div
I
LOAD
= 600mA
I
L
LX
1A/div
10V/div
100mV/div
V
OUT
LIGHT-LOAD SWITCHING
WAVEFORM
MAX1846/7 toc18
APPLICATION CIRCUIT B
1
µs/div
I
LOAD
= 50mA
I
L
1A/div
500mV/div
I
LOAD
V
OUT
LOAD-TRANSIENT RESPONSE
MAX1846/7 toc19
APPLICATION CIRCUIT B
2ms/div
I
LOAD
= 10mA to 400mA
I
L
500mA/div
200mV/div
I
LOAD
V
OUT
LOAD-TRANSIENT RESPONSE
MAX1846/7 toc20
APPLICATION CIRCUIT C
400
µs/div
I
LOAD
= 4mA to 100mA
Typical Operating Characteristics (continued)
(Circuit references are from Table 1 in the Main Application Circuits section, C
VL
= 0.47µF, C
REF
= 0.1µF, T
A
= +25°C, unless otherwise
noted.)