Datasheet > FAN5910UCX

FAN5910UCX

更新时间： 2023-09-03 20:40:22

品牌	Logo	应用领域
安森美 - ONSEMI		GSM
页数	文件大小	规格书
16页	533K
描述
Multi-Mode Buck Converter with LDO Assist for GSM / EDGE, 3G/3.5G and 4G PAs

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FAN5910UCX 数据手册

FAN5910

Table 4. ELECTRICAL CHARACTERISTICS, ALL MODES Recommended operating conditions, unless otherwise noted, circuit

per Figure 1, minimum and maximum values are at V = 2.7 V to 5.5 V, T = −40°C to +85°C, V

= V

* 2.5 = 0.4 V to 3.6 V, V

≥

OUT

CON

+ 0.3 V. Typical values are given V = 3.8 V and V

= 2.5 A at T = 25°C. L = 1.5 mH, Murata DFE201610C, C = 10 mF 0402

OUT

OUT A IN

Samsung CL05A106MP5NUNC, C

= 1 x 4.7 mF 0402 Murata GRM155R60J475ME47D, 2 x 10 mF 0402 Murata GRM188B30J106ME47D.

OUT

Symbol

Parameter

Condition

Min

Typ

Max

Unit

DC−DC

Maximum Output Voltage

DC−DC EFFICIENCY

Power Efficiency, Low−Power Auto Mode

= 1.44 V, V = 3.9 V

3.55

3.60

3.65

OUT_MAX

CON

Power

OUT

= 3.1 V, I

= 1.8 V, I

= 0.5 V, I

= 250 mA

= 10 mA

LOAD

OUTPUT REGULATION

OUT

Line Regulation

Load Regulation

Ripple

3.1 ≤ V ≤ 3.8, 100 mA

OUT_RLine

OUT_RLoad

20 mA ≤ I

≤ 800 mA

OUT

PFM Mode, I < 100 mA

OUT

OUT_Ripple

PWM Mode

TIMING

Startup Time

= 3.8 V, V from 0 V to 2.5 V,

OUT

= 1 x 4.7 mF, 10 V, X5R;

2 x 10 mF, 6.3 V, X5R

Step Response Rise Time

Step Response Fall Time

From V to 95% V

, DV

LOAD

≤

DC−DC_TR

CON

OUT

2.7 V (0.7 V – 3.4 V), R

= 5 W,

= 24.7 mF

OUT

From V

to 5% V

, DV

OUT

LOAD

DC−DC_TF

CON

OUT

2.7 V (3.4 V – 0.7 V), R

= 200 W,

= 24.7 mF

OUT

Maximum Allowed Time for Consecutive

Current Limit (Note 9)

OUT

< 1 V

1500

4800

DC−DC_CL

Consecutive Current Limit Recovery Time

(Note 9)

DCDC_CLR

6. Dropout depends on LDO and DC−DC PFET R

and inductor DCR.

DSON

7. The current limit is the peak (maximum) current.

8. Guaranteed by design. Maximum values are based on simulation results with 50% COUT derating; not tested in production. Voltage tran-

sient only. Assumes C

= 24.7 mF (1x4.7 mF for regulator and 2x10 mF for PA decoupling capacitors).

OUT

9. Protects part under short−circuit conditions

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.

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