參數(shù)資料
型號: MAX1540A
廠商: Maxim Integrated Products, Inc.
英文描述: Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator
中文描述: 雙路、降壓型控制器,帶有電感飽和保護、動態(tài)輸出和線性穩(wěn)壓器
文件頁數(shù): 13/49頁
文件大?。?/td> 794K
代理商: MAX1540A
M
Dual Step-Down Controllers with Saturation
Protection, Dynamic Output, and Linear Regulator
______________________________________________________________________________________
13
Typical Operating Characteristics (continued)
(MAX1541 circuit of Figure 12, V
IN
= 12V, V
DD
= V
CC
= 5V,
SKIP
= GND, TON = REF, T
A
= +25°C, unless otherwise noted.)
SHUTDOWN WAVEFORM
(DISCHARGE MODE ENABLED)
3.3V
0
5V
0
B
D
C
A
1ms/div
2.5V
0
0
0
A. ON2, 5V/div
B. OUT2, 2V/div
C. INDUCTOR CURRENT,
2A/div
100
Ω
LOAD, OVP/UVP = V
CC
OR OPEN
D. DL2, 5V/div
E. PGOOD2, 5V/div
5V
E
2.5V OUTPUT LOAD TRANSIENT
(FORCED PWM)
MAX1540A toc18
4A
0
4A
0
B
D
C
A
40
μ
s/div
2.5V
2.4V
2.6V
A. I
OUT2
= 0 TO 4A, 5A/div
B. V
OUT2
= 2.5V, 100mV/div
SKIP = V
CC
C. INDUCTOR CURRENT, 5A/div
D. LX2, 10V/div
12V
0
2.5V OUTPUT LOAD TRANSIENT
(PULSE SKIPPING)
MAX1540A toc19
4A
0
4A
0
B
D
C
A
40
μ
s/div
2.5V
2.4V
2.6V
A. I
OUT2
= 0.1A TO 4A, 5A/div
B. V
OUT2
= 2.5V, 100mV/div
SKIP = GND
C. INDUCTOR CURRENT, 5A/div
D. LX2, 10V/div
12V
0
LINEAR-REGULATOR
LOAD TRANSIENT
MAX1540A toc20
100mA
0
B
A
100
μ
s/div
3.3V
3.2V
3.4V
A. I
LDOOUT
= 1mA TO 100mA, 50mA/div
B. V
LDOOUT
= 3.3V, 100mV/div
SKIP = GND
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