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参数资料
| 型号： | MAX1565 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Small, High-Efficiency, Five-Channel Digital Still Camera Power Supply |
| 中文描述： | 小型、高效率、5路输出数码相机电源 |
| 文件页数： | 9/26页 |
| 文件大小： | 512K |
| 代理商： | MAX1565 |
M
Small, High-Efficiency, Five-Channel
Digital Still Camera Power Supply
_______________________________________________________________________________________
9
STEP-UP LOAD TRANSIENT RESPONSE
400
μ
s/div
I
200mA/div
V
OUTSU
AC-COUPLED
100mV/div
0A
0V
V
OUTSU
= 3.3V
V
IN
= 2.5V
STEP-DOWN LOAD TRANSIENT RESPONSE
400
μ
s/div
I
100mA/div
V
OUTSD
AC-COUPLED
50mV/div
0A
0V
V
OUTSD
= 1.5V
V
OUTSU
= 3.3V
V
IN
= 2.5V
Typical Operating Characteristics (continued)
(Circuit of Figure 1, T
A
= +25
°
C, unless otherwise noted.)
Pin Description
PIN
NAME
FUNCTION
1
COMP1
Auxiliary Controller 1 Compensation Node. Connect a series RC from COMP1 to GND to compensate the
control loop. COMP1 is actively driven to GND in shutdown and thermal limit.
Auxiliary Controller 1 Feedback Input. For 5V output, short FBSEL1 to GND and connect FB1 to the output
voltage. For other output voltages, connect FBSEL1 to OUTSU and connect a resistive voltage-divider from
the step-up converter output to FB1 to GND. The FB1 feedback threshold is then 1.25V. This pin is high
impedance in shutdown.
Power Ground. Connect PGNDA and PGNDB together and to GND with short trace as close to the IC as
possible.
Step-Down Converter Power-Switching Node. Connect LXSD to the step-down converter inductor. LXSD is
the drain of the P-channel switch and N-channel synchronous rectifier. LXSD is high impedance in
shutdown.
2
FB1
3
PGNDA
4
LXSD
5
INSD
Step-Down Converter Input. INSD can connect to OUTSU, effectively making OUTSD a buck-boost output
from the battery. Bypass to GND with a 1μF ceramic capacitor if connected to OUTSU. INSD may also be
connected to the battery, but should not exceed OUTSU by more than a Schottky diode forward voltage.
Bypass INSD with a 10μF ceramic capacitor when connecting to the battery input. A 10k
internal
resistance connects OUTSU and INSD.
Step-Down Converter On/Off Control Input. Drive ONSD high to turn on the step-down converter. This pin
has an internal 330k
pulldown resistor. ONSD does not start until OUTSU is in regulation.
Step-Down Converter Compensation Node. Connect a series RC from COMPSD to GND to compensate the
control loop. COMPSD is pulled to GND in normal shutdown and during thermal shutdown (see the
Step-
Down Compensation
section).
6
ONSD
7
C OM P S D
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1565ETJ | 功能描述:PMIC 解决方案 5Ch 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 |
| MAX1565ETJ+ | 功能描述:PMIC 解决方案 5Ch 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 |
| MAX1565ETJ+T | 功能描述:PMIC 解决方案 5Ch 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 |
| MAX1565ETJ-T | 功能描述:PMIC 解决方案 5Ch 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 |
| MAX1565EVKIT | 制造商:Maxim Integrated Products 功能描述:SMALL, HIGH-EFFICIENCY, FIVE-CHANNEL DSC - Bulk |
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