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参数资料
| 型号： | MAX1566-MAX1567 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Six-Channel, High-Efficiency, Digital Camera Power Supplies |
| 中文描述： | 六通道，高效率，数码相机电源 |
| 文件页数： | 8/35页 |
| 文件大小： | 1134K |
| 代理商： | MAX1566-MAX1567 |
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M
Six-Channel, High-Efficiency, Digital
Camera Power Supplies
8
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
PVSU
= V
PV
= V
PVM
= V
PVSD
= V
INDL2
= 3.6V,
T
A
= -40°C to +85°C
, unless otherwise noted.)
PARAMETER
AUX3 FBL or FBH to CC
Transconductance
FB_ Input Leakage Current
DL_ Driver Resistance
Output high or low
AUX1OK
Output Low
0.1mA into
AUX1OK
AUX1OK
Leakage Current
ONSU = GND
OVERLOAD PROTECTION
SCF Leakage Current
ONSU = PVSU, FBSU = 1.5V
SCF Output Low Voltage
0.1mA into SCF
LOGIC INPUTS (ON_, SUSD)
1.1V < PVSU < 1.8V
1.8V
≤
PVSU < 2.5V
ONSU Input Low Level
2.5V
≤
PVSU < 5.5V
1.1V < PVSU < 1.8V
ONSU Input High Level
1.8V < PVSU < 5.5V
ONM, ONSD, ON1, ON2, ON3,
SUSD Input Low Level
ONM, ONSD, ON1, ON2, ON3,
SUSD Input High Level
SUSD Input Leakage
Note 2:
The MAX1566/MAX1567 are powered from the step-up output (PVSU). An internal low-voltage startup oscillator drives the
step-up starting at approximately 0.9V until PVSU reaches approximately 2.5V. When PVSU reaches 2.5V, the main control
circuitry takes over. Once the step-up is up and running, it can maintain operation with very low input voltages; however,
output current is limited.
Note 3:
Since the device is powered from PVSU, a Schottky rectifier, connected from the battery to PVSU, is required for low-voltage
startup.
Note 4:
The step-up regulator is in startup mode until this voltage is reached. Do not apply full load current during startup. A power-
OK output can be used with an external PFET to gate the load until the step-up is in regulation. See the
AUX1OK
,
SDOK
,
and SCF Connections
section.
Note 5:
The step-up current limit in startup refers to the LXSU switch current limit, not the output current limit.
Note 6:
If the main converter is configured as a step-up (SUSD = PVSU), the P-channel synchronous rectifier is disabled until the
2.5V normal operation threshold has been exceeded. If the main converter is configured as a step-down (SUSD = GND), all
step-down operation is locked out until the normal operation threshold has been exceeded. When the main is configured as
a step-down, operation in dropout (100% duty cycle) can only be maintained for 100,000 OSC cycles before the output is
considered faulted, triggering global shutdown.
Note 7:
Operation in dropout (100% duty cycle) can only be maintained for 100,000 OSC cycles before the output is considered
faulted, triggering global shutdown.
Note 8:
ONM, ONSD, ON1, ON2, and ON3 are disabled until 1024 OSC cycles after PVSU reaches 2.7V.
CONDITIONS
MIN
MAX
UNITS
35
150
μS
-100
+100
7
0.1
1
nA
V
μA
μA
V
1
0.1
0.2
0.4
0.5
V
(PVSU
- 0.2)
1.6
V
2.7V < PVSU < 5.5V (Note 8)
0.5
V
2.7V < PVSU < 5.5V (Note 8)
1.6
V
1
μA
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1567ETL | 功能描述:PMIC 解决方案 RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX1567ETL+ | 功能描述:PMIC 解决方案 6Ch Digital Camera Power Supply RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX1567ETL+T | 功能描述:PMIC 解决方案 6Ch Digital Camera Power Supply RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX1567ETL-T | 功能描述:PMIC 解决方案 RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX1567EVKIT | 制造商:Maxim Integrated Products 功能描述:6-CHANNEL HIGH EFFICIENCY DIGITAL CAMERA POWE - Bulk |
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