Datasheet

4.5V to 40V Input Automotive
Flyback/Boost/SEPIC Power-Supply Controllers
POWER-DOWN SEQUENCE THROUGH V
IN
MAX15004 toc19
4ms/div
V
IN
10V/div
V
CC
5V/div
REG5
5V/div
V
OUT
5V/div
V
ON/OFF
= 5V
POWER-UP SEQUENCE
THROUGH ON/OFF
MAX15004 toc20
1ms/div
ON/OFF
5V/div
V
CC
5V/div
REG5
5V/div
V
OUT
5V/div
POWER-DOWN SEQUENCE
THROUGH ON/OFF
MAX15004 toc21
400ms/div
ON/OFF
5V/div
V
CC
5V/div
REG5
5V/div
V
OUT
5V/div
Typical Operating Characteristics (continued)
(V
IN
= 14V, C
IN
= 0.1μF, C
VCC
= 0.1μF // 1μF, C
REG5
= 1μF, V
ON/OFF
= 5V, C
SS
= 0.01μF, C
SLOPE
= 100pF, RT = 13.7kΩ,
CT = 560pF. T
A
= +25°C, unless otherwise noted.)
HICCUP MODE FOR FLYBACK CIRCUIT
(FIGURE 7)
MAX15004 toc24
10ms/div
V
CS
200mV/div
V
ANODE
1V/div
I
SHORT
500mA/div
DRAIN WAVEFORM IN
FLYBACK CONVERTER (FIGURE 7)
MAX15004 toc25
4μs/div
10V/div
I
LOAD
= 10mA
LINE TRANSIENT FOR V
IN
STEP
FROM 14V TO 5.5V
MAX15004 toc22
100μs/div
V
IN
10V/div
V
CC
5V/div
REG5
5V/div
V
OUT
5V/div
LINE TRANSIENT FOR V
IN
STEP
FROM 14V TO 40V
MAX15004 toc23
100μs/div
V
IN
20V/div
V
CC
5V/div
REG5
5V/div
V
OUT
5V/div
MAX15004A/B/MAX15005A/B
8
Maxim Integrated