参数资料
型号: MAX8569EVKIT+
厂商: Maxim Integrated Products
文件页数: 6/11页
文件大小: 0K
描述: EVALUATION KIT FOR MAX8569
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: DC/DC,步升
输出及类型: 1,非隔离
电流 - 输出: 200mA
输入电压: 1.5 ~ 5.5 V
稳压器拓扑结构: 升压
板类型: 完全填充
已供物品:
已用 IC / 零件: MAX8569
200mA Step-Up Converters in 6-Pin
SOT23 and TDFN
Typical Operating Characteristics (continued)
(Circuit of Figure 2, V OUT = 3.3V, V BATT = +2V, T A = +25 ° C, circuit of Figure 1, T A = +25 ° C, unless otherwise noted.)
SHUTDOWN RESPONSE
SWITCHING WAVEFORMS
(R LOAD = 33 ? )
MAX8569 toc13
V OUT
(AC-COUPLED)
(R LOAD = 33 ? )
MAX8569 toc14
100mV/div
3.3V
V OUT
V SHDN
100 μ s/div
2V
2V/div
V LX
I L
10 μ s/div
2V/div
500mA/div
Pin Description
PIN
MAX8569A MAX8569B
NAME
FUNCTION
Shutdown Input. Drive SHDN low to place the MAX8569 in shutdown mode. SHDN can be
1
1
SHDN
used for a low-battery cutoff (1.228V threshold). See the Low-Battery Cutoff section for
details. Drive SHDN high for normal operation.
2
3
4
5
6
2
3
4
5
BATT
GND
LX
OUT
FB
Battery Voltage Connection. Connect BATT to a 1.5V to 5.5V supply. Bypass BATT to GND
with a 10μF or larger ceramic capacitor.
Ground
Inductor Connection. Connect the switched side of the inductor to LX. During shutdown,
LX is connected to OUT.
Output Voltage. Bypass OUT to GND with a 10μF or larger ceramic capacitor. During
shutdown, OUT is connected to LX. OUT is also the bootstrapped supply input for the IC.
Feedback Input. Connect FB to the center tap of an external resistor-divider from OUT to
GND to set the output voltage. V FB regulates to 1.228V.
Reset Output. RST is an open-drain output that goes high impedance when the output
6
RST
voltage rises above 90% of the nominal regulation voltage. RST pulls low when the output
is below 90% of the nominal regulation voltage. RST is high impedance during shutdown.
EP
Exposed Paddle (TDFN Package Only). Connect to the PC board ground plane for
increased thermal performance.
6
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