数码相机(DIGICAM)



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Maxim > 方案 > 数码相机(DIGICAM)

备用电池切换供电

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标题/型号

关键优势

QV PDF

MAX8627评估板
MAX8627EVKIT

QV PDF

低V_BATT、20µA I_Q、1MHz同步整流boost转换器，带有真正关断
MAX8627

可理想用于DSC电机和备用电源

QV PDF

完备的电源管理IC，用于锂电池和NiMH电池
MAX8568A, MAX8568B

QV PDF

1.5µA I_Q、升压型DC-DC转换器，薄型SOT23-5封装
MAX1722, MAX1723, MAX1724

QV PDF

高效率、升压型转换器，带有反接电池保护
MAX1832, MAX1833, MAX1834, MAX1835

Key Specifications: Battery Backup Circuits

Part Number

Reset Threshold Range (V)

Max. I_CC (µA)

Features

Package

Operating Temp. Range (°C)

MAX8568A

2.5 to 3.3
3.3 to 5.5

•	Adjustable Reset Input

•	Batt Freshness Seal

•	Power Fail Comparator

THIN QFN/16

-40 to +85

MAX8568B

2.5 to 3.3
3.3 to 5.5

•	Adjustable Reset Input

•	Batt Freshness Seal

•	Power Fail Comparator

THIN QFN/16

-40 to +85

See All Battery Backup Circuits (89)

Key Specifications: Step-Up Switching Regulators

Part Number

V_IN (min) (V)

V_IN (max) (V)

Min. V_OUT (V)

Max. V_OUT (V)

Preset V_OUT (V)

I_OUT (A)

Output Adj. Method

Operating Current, I_CC (max) (mA)

Number of DC-DC Outputs

Operating Freq. (kHz)

Features

EV-Kit

Package

Operating Temp. Range (°C)

MAX8627

0.9

5.5

Resistor

0.03

1000

•	Current Limit

•	Fixed Frequency/ PWM Operation

•	Internal Power Switches

•

Shutdown

•	Soft Start

•	Synchronous Rectifier

•	True Shutdown

Yes

THIN QFN (Dual)/14

-40 to +85

MAX1722

0.8

5.5

0.15

Resistor

0.0035

•	Current Limit

•	Internal Power Switches

•

Shutdown

•	Synchronous Rectifier

SOT-23/5

-40 to +85

MAX1723

0.8

5.5

0.15

Resistor

0.0035

•	Current Limit

•	Internal Power Switches

•

Shutdown

•	Synchronous Rectifier

SOT-23/5

-40 to +85

MAX1724

0.8

5.5

2.7

2.7
3.3

0.15

Preset

0.0035

•	Current Limit

•	Internal Power Switches

•

Shutdown

•	Synchronous Rectifier

SOT-23/5

-40 to +85

MAX1832

1.5

5.5

0.15

Resistor

0.008

500

•	Current Limit

•	Internal Power Switches

•	Reverse Battery Protection

•

Shutdown

•	Synchronous Rectifier

Yes

SOT-23/6

-40 to +85

MAX1833

1.5

5.5

3.3

0.15

Preset

0.008

500

•	Current Limit

•	Internal Power Switches

•	Reset Output

•	Reverse Battery Protection

•

Shutdown

•	Synchronous Rectifier

Yes

SOT-23/6
THIN QFN (Dual)/6

-40 to +85

MAX1834

1.5

5.5

0.15

Resistor

0.008

500

•	Current Limit

•	Internal Power Switches

•	Reverse Battery Protection

•

Shutdown

•	Synchronous Rectifier

Yes

SOT-23/6

-40 to +85

MAX1835

1.5

5.5

3.3

0.15

Preset

0.008

500

•	Current Limit

•	Internal Power Switches

•	Reset Output

•	Reverse Battery Protection

•

Shutdown

•	Synchronous Rectifier

Yes

SOT-23/6

-40 to +85

See All Step-Up Switching Regulators (89)

Key Specifications: Switch-Mode DC-DC Power Supplies
Part Number	Topology	V_IN (min) (V)	V_IN (max) (V)	Number of DC-DC Outputs	Preset V_OUT (V)	Digital/VID Programmed Output	Min. Adjustable V_OUT (V)	Max. Adjustable V_OUT (V)	I_OUT (A)	Operating Current, I_CC (max) (mA)	Operating Freq. (kHz)	Internal Power Switch(es)	Package
MAX8627	Step-Up	0.9	5.5	1	-	No	1	5	1	0.03	1000	Yes	THIN QFN (Dual)/14
MAX1722	Step-Up	0.8	5.5	1	-	No	2	5.5	0.15	0.0035	-	Yes	SOT-23/5
MAX1723	Step-Up	0.8	5.5	1	-	No	2	5.5	0.15	0.0035	-	Yes	SOT-23/5
MAX1724	Step-Up	0.8	5.5	1	2.7 3.3	No	-	-	0.15	0.0035	-	Yes	SOT-23/5
MAX1832	Step-Up	1.5	5.5	1	-	No	2	5.5	0.15	0.008	500	Yes	SOT-23/6
MAX1833	Step-Up	1.5	5.5	1	3.3	No	-	-	0.15	0.008	500	Yes	SOT-23/6 THIN QFN (Dual)/6
MAX1834	Step-Up	1.5	5.5	1	-	No	2	5.5	0.15	0.008	500	Yes	SOT-23/6
MAX1835	Step-Up	1.5	5.5	1	3.3	No	-	-	0.15	0.008	500	Yes	SOT-23/6
See All Switch-Mode DC-DC Power Supplies (429)