MAX746 Maxim, MAX746 Datasheet - Page 5

• Manufacturer Part Number: MAX746
• Description: High-Efficiency / PWM / Step-Down / N-Channel DC-DC Controller
• Manufacturer: Maxim

(Circuit of Figure 1a, T
____________________________Typical Operating Characteristics (continued)
A : EXT VOLTAGE, 20V/div
B : INDUCTOR CURRENT 1A/div
C : V
V+ = 10V, I
A: LOAD CURRENT, 0.1A TO 1.5A, 1A/div
B: V
V+ = 10V
CONTINUOUS-CONDUCTION MODE
OUT
OUT
LOAD-TRANSIENT RESPONSE
RIPPLE, 50mV/div, AC-COUPLED
RIPPLE, 50mV/div
OUT
= 3A
WAVEFORMS
200 s/div
5 s/div
_______________________________________________________________________________________
A
= +25°C, unless otherwise noted.)
High-Efficiency, PWM, Step-Down,
C
A
B
A
B
0V
A: LOAD CURRENT, 0.1A TO 1.5A, 1A/div
B: V
V+ = 10V
A: EXT VOLTAGE, 10V/div
B: INDUCTOR CURRENT, 500mA/div
C: V
V+ = 10V, I
OUT
OUT
DISCONTINUOUS-CONDUCTION
LOAD-TRANSIENT RESPONSE
RIPPLE, 50mV/div, AC COUPLED
RIPPLE, 50mV/div, AC-COUPLED
N-Channel DC-DC Controller
IDLE-MODE WAVEFORMS
OUT
= 75mA
20 s/div
1ms/div
A
B
A
B
C
A: EXT VOLTAGE, 10V/div
B: INDUCTOR CURRENT, 500mA/div
C: V
V+ = 6V, I
8V
OUT
A: V+ = 8V TO 10V, 2V/div
B: V
I
OUT
MODERATE-LOAD, IDLE-MODE
LINE-TRANSIENT RESPONSE
RIPPLE, 50mV/div, AC-COUPLED
OUT
OUT
= 3A
RIPPLE, 100mV/div
= 480mA
WAVEFORMS
500ms/div
20 s/div
10V
A
B
A
B
C
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