max887h Maxim Integrated Products, Inc., max887h Datasheet - Page 6

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max887h

Manufacturer Part Number
max887h
Description
100% Duty Cycle, Low-noise, Step-down, Pwm Dc-dc Converter
Manufacturer
Maxim Integrated Products, Inc.
Datasheet

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100% Duty Cycle, Low-Noise,
Step-Down, PWM DC-DC Converter
(Circuit of Figure 2, T
6
_____________________________Typical Operating Characteristics (continued)
_______________________________________________________________________________________
C
A
B
C
A
B
RECOVERY FROM 100% DUTY CYCLE
LOAD-TRANSIENT RESPONSE
V
LOAD = 0mA TO 500mA, PWM MODE
A: LX, 5V/div
B: V
C: LOAD CURRENT, 500mA/div
V
LOAD = 500mA, PWM MODE
A: V
B: V
C: LX, 10V/div
A
IN
IN
= +25°C, unless otherwise noted.)
= 5V, V
= 3.3V TO 11V, V
OUT
IN
OUT
, 5V/div
, 50mV/div, AC COUPLED
, 50mV/div, AC COUPLED
OUT
(DROP OUT)
200 s/div
40 s/div
= 3.3V,
OUT
= 3.3V,
A
B
C
D
A
B
SHUTDOWN AND STARTUP RESPONSE
V
LOAD = 500mA, PWM MODE
A: V
B: V
LINE-TRANSIENT RESPONSE
V
LOAD = 100mA, PWM MODE
A: SHDN, 5V/div
B: V
C: LX, 5V/div
D: INDUCTOR CURRENT, 500mA/div
IN
IN
= 5V TO 11V, V
= 5V, V
IN
OUT
OUT
, 5V/div
, 20mV/div, AC COUPLED
, 2V/div, AC COUPLED
OUT
200 s/div
500 s/div
= 3.3V,
OUT
= 3.3V,

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