Datasheet > 34712

34712

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		开关双倍数据速率
页数	文件大小	规格书
23页	473K
描述
3.0A 1.0MHz Fully Integrated DDR Switch-Mode Power Supply

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34712 数据手册

ELECTRICAL CHARACTERISTICS

STATIC ELECTRICAL CHARACTERISTICS

Table 3. Static Electrical Characteristics

Characteristics noted under conditions 3.0 V ≤ V_IN≤ 6.0 V, -40°C ≤ T_A≤ 85°C, GND = 0 V unless otherwise noted. Typical

values noted reflect the approximate parameter means at T_A= 25°C under nominal conditions unless otherwise noted.

Characteristic

IC INPUT SUPPLY VOLTAGE (VIN)

Symbol

Min

Typ

Max

Unit

Input Supply Voltage Operating Range

V_IN

I_IN

3.0

6.0

Input DC Supply Current ⁽¹¹⁾

Normal Mode: SD = 1 & STBY = 1, Unloaded Outputs

Input DC Supply Current ⁽¹¹⁾

I_INQ

µA

Standby Mode, SD = 1 & STBY = 0

Input DC Supply Current ⁽¹¹⁾

I_INOFF

100

Shutdown Mode, SD = 0 & STBY = X

INTERNAL SUPPLY VOLTAGE OUTPUT (VDDI)

Internal Supply Voltage Range

V_DDI

2.35

2.5

2.65

BUCK CONVERTER (PVIN, SW, GND, BOOT, INV, COMP)

High-side MOSFET Drain Voltage Range

Output Voltage Adjustment Range ⁽¹²⁾

P_VIN

V_OUT

2.5

0.7

6.0

1.35

1.0

Output Voltage Accuracy ^{(12), (13), (14)}

-1.0

Line Regulation ⁽¹²⁾

REG_LN

REG_LD

-1.0

1.0

Normal Operation, V_IN= 3.0 V to 6.0 V, I_OUT= ±3.0 A

Load Regulation ⁽¹²⁾

Normal Operation, I_OUT= -3.0 A to 3.0 A

Error Amplifier Common Mode Voltage Range ^{(12), (15)}

0.0

-1.5

1.5

-3.0

1.35

-8.0

8.0

3.0

REF

Output Undervoltage Threshold

V_UVR

V_OVR

I_OUT

I_LIM

Output Overvoltage Threshold

Continuous Output Current

Over Current Limit, Sinking and Sourcing

4.0

Short Circuit Current Limit

(Sourcing and Sinking)

I_SHORT

6.5

(12)

High-Side N-CH Power MOSFET (M3) R_DS(ON)

R_DS(ON)HS

mΩ

I_OUT= 1.0 A, V_BOOT- V_SW= 3.3 V

(12)

Low-Side N-CH Power MOSFET (M4) R_DS(ON)

R_DS(ON)LS

I_OUT= 1.0 A, V_IN= 3.3 V

Notes

11. See section “MODES OF OPERATION”, page 14 has a detailed description of the different operating modes of the 34712

12. Design information only, this parameter is not production tested.

13. ±1% is assured at room temperature.

14. Overall output accuracy is directly affected by the accuracy of the external feedback network, 1% feedback resistors are recommended.

15. The 1% output voltage regulation is only guaranteed for a common mode voltage range greater than or equal to 0.7V at room

temperature.

34712

Analog Integrated Circuit Device Data

Freescale Semiconductor

1...4 5 678 9 10...23

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