Datasheet > TC7734FTG

TC7734FTG

更新时间： 2023-12-20 18:44:16

品牌	Logo	应用领域
东芝 - TOSHIBA		/
页数	文件大小	规格书
84页	2489K
描述
System power supplies, Multi-channel

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TC7734FTG 数据手册

TC7734FTG

TOSHIBA CMOS Integrated Circuit Silicon Monolithic

TC7734FTG

Power Management System IC

1. DESCRIPTION

TC7734FTG is a complete power supply solution for portable

devices that include 4 DCDC Buck Converters, 3 LDOs, 2-ch LED

Driver and built-in Switching Charger function. Most of the outputs

can be controlled by I²C bus for various programmable settings.

2. FEATURES

• Operating voltage: 3.4 V to 5.5 V

• 4 ch DCDC converter (DCDC1 to DCDC4)

. Synchronous Current Mode Buck Converters

. DCDC1-4 Optional 2-Phase Switching Reduces Input Peak

Current

. Built-in compensation circuit: DCDC1 to DCDC4

• 3 ch LDO(LDO1 to LDO3)

P-VQFN64-0909-0.50-001

Weight: 0.192 g (typ.)

• LED Driver

. Built-in Current Mode DCDC Boost Converter

. 2-Ch Constant Current LED Driver

. Sink Current: up to 80 mA/ch with LED voltage up to 20 V

. Output Current Accuracy: +/- 5% (ILED = 20 mA)

. LED1 and LED2 Regulation Voltage: 0.4 V

. PWM dimming, I²C Controlled 32 steps with 195Hz fixed dimming frequency

. LED Driver Protection Circuit

 Over Voltage Detection (OVD)

 Output Open Detection (OOD)

 Output Short Detection (OSD)

• Battery Charger Function

. USB Host and USB Charger Adaptor Detections for Optimum Charge Current for SDP, CDP, DCP and Other)

. DCIN Input Over Voltage Protection (OVP): 5.8 V (typ.) * Maximum voltage of DCIN terminal is defined by 6 V.

. Power Path Function

. 1.5 A Switching Charger with Built-in Power MOSFETs

Output Descriptions:

Output

DCDC1

DCDC2

DCDC3

DCDC4

LDO1

Adj Vout (V)

0.9 - 1.4

1.05 - 1.95

2.7 - 3.4

1.5 - 3.3

1.2 – 1.9

Step (V)

Default (V)

1.0

Default Options (V) ¹

Iout (A)

1500 mA

1000 mA

800 mA

500 mA

300 mA

Control

I²C

50m

150m

100m

0.9 - 1.4 V@50 mV

1.05 - 1.95 V@150 mV

2.7 – 3.4 V@100 mV

R_ext

1.2,1.3,1.4,1.5, 1.6,

1.7, 1.8, 1.9

1.35

3.3

(1.8)

1.8

I²C

R_ext

I²C

LDO2

1.5 – 2.8

100m

2.8

1.5, 1.6, 1.7, 1.8, 2.3,

2.5, 2.8

350 mA

I²C

LDO3

Output

LEDD

1.5 - 3.3

Adj PWM

32 steps

(1.8)

Vout (V)

R_ext

Default Iout

20 mA x 2

120 mA

fPWM (Hz)

195

R_ext

Control

I²C

Iout

80 mA x2

• I²C Control for Various Parameters

• 1MHz Switching Frequencies DCDC1 to DCDC4

• 1MHz Switching Frequencies LED Driver, and Switching Charger

• PFM/PWM Operation for Wide Range of Load Current

• Built-in Soft start Circuit

• Programmable Power Sequence

• Interrupt for Event Notifications

• Power-good (PG) Notification

• DCDC and LDO Over Current Limit Circuits (OCL)

• Global Protection: Thermal Shutdown (TSD), VDD Under Voltage Lock Out (VUVLO), DCIN Under Voltage Lock Out (DUVLO)

• Register Password Protection

• Package: P-VQFN64-0909-0.50-001 9 mm × 9 mm × 0.7 mm (0.5 mm pin pitch)

• Application: Tablet PC, Portable Devices

Note 1: PFM does not apply to DCDC3

2015-6-5

12 3 4 5 6 7...84

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