RT6158H_技术文档

®

RT6158H

High Efficiency, Low Quiescent, 3A Buck-Boost Converter

General Description

Features

^Input Voltage Range : 2.5V to 5.5V

^Adjustable Output Voltage : 2.1V to 5.2V by External

Divided Resistors

The RT6158H converter is a high efficiency single inductor

converter which can operate with wide input voltage such

as battery which is higher or lower than the output voltage

and it can supply the load current up to 3A. The maximum

peak current in the switches is limited to a typical value of

6.5A. Feedback loop is internally compensated for both

Buck and Boost operation and it provides seamless

transition between Buck and Boost modes and optimal

transient response. The Buck-Boost operates at 1.5MHz

typical switching frequency in full synchronous operation.

^Up to 3A Maximum Load Capability for V_IN= 3V,

V_OUT= 3.5V

^Up to 96% Efficiency

^OCP, OVP, OTP Protected Function

^2MHz Switching Frequency

^5μA Non-Switching Low Quiescent Maximizes

Light Load Efficiency

^Forced PWM and Automatic PFM/PWM Mode

Selection

The RT6158H operates in Pulse Frequency Modulation

(PFM) mode for increasing efficiency during low power

RF transmission modes. The PFM mode can be disabled,

forcing the RT6158H to operate at a fixed switching

frequency operation at 2MHz. The RT6158H can also be

synchronized with external frequency from 2.2MHz to

2.6MHz. The RT6158H output voltage is programmable

using an external resistor divider; the output voltage range

is from 2.1V to 5.2V.

 Output Fast Discharge Function

 Automatic / Seamless Step Up and Step Down

Mode Transitions

 25-Ball WL-CSP Package

Applications

 Cellular Telephones

 RF Power Amplifiers

 Tablet PC

Ordering Information

RT6158H

 Portable Instrument

Package Type

WSC : WL-CSP-25B 2.07x2.33 (BSC)

Pin Configuration

Note :

(TOP VIEW)

Richtek products are :

 RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

 Suitable for use in SnPb or Pb-free soldering processes.

A1

A2

A3

A4

A5

PVIN PVIN PVIN PVIN AVIN

B1

B2

B3

B4

B5

LX1

EN

C1

C2

C3

C4

C5

Marking Information

PGND PGND PGND MODE AGND

0K : Product Code

D1

D2

D3

D4

D5

YMDNN : Date Code

0K YM

LX2

LX2 AGND

E1

E2

E3

E4

E5

DNN

VOUT VOUT VOUT VOUT

FB

WL-CSP-25B 2.07x2.33 (BSC)

©

is a registered trademark of Richtek Technology Corporation.

DS6158H-00 March 2017

www.richtek.com

1

RT6158H

Typical Application Circuit

L1

1µH

B1, B2, B3, B4

LX1

D1, D2, D3, D4

LX2

A1, A2, A3, A4

V

IN

PVIN

2.5V to 5.5V

RT6158H

C

IN1

E1, E2, E3, E4

V

OUT

VOUT

FB

10µF x 2

2.1V to 5.2V

C

56pF

C

R1

1M

FF

OUT

A5

B5

AVIN

EN

22µF x 2

E5

R2

294k

100k

C4

Pull high voltage

MODE

(For PFM operation)

AGND

C5, D5

PGND

C1, C2, C3

BOM List

Reference

Description

Manufacturer

Package

Parameter

Typ

Unit

Murata –

GRJ155R60J106ME11D

C_IN

10F/6.3V/X5R

0402

C

10

22

56

F

Murata –

GRM188R60J226ME15D

C_OUT

C_FF

22F/6.3V/X5R

0603

0201

C

F

Murata –

GRM0335C1H560JA01D

56pF/50V/X5R

pF

L

1

H

L1

1H, ±20%

DFE252010F – 1R0M = P02

2520

DCR (Series R)

48

m

Functional Pin Description

Pin No.

A1, A2, A3, A4 PVIN

A5 AVIN

B1, B2, B3, B4 LX1

Pin Name

Pin Function

Power input supply.

Analog input supply.

Phase 1. Switching node 1. Connect to inductor.

B5

EN

Chip enable. This input must not be left floating and must be terminated.

Power ground.

C1, C2, C3

PGND

High for PFM mode, low for FCCM mode. This pin also can be used to

synchronous switching frequency with 2.2MHz to 2.6MHz. This input must not

be left floating and must be terminated.

C4

MODE

C5, D5

AGND

Analog ground.

D1, D2, D3, D4 LX2

E1, E2, E3, E4 VOUT

Phase 2. Switching node 2. Connect to inductor.

Output power.

E5

FB

Voltage feedback.

©

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

2

DS6158H-00 March 2017

RT6158H

Functional Block Diagram

LX1

LX2

A

D

VOUT

PVIN

Rd

Gate

DRV

UVLO

AVIN

DIS

C

B

OCP

EN

PWM

Control

Digital

Control

DIS

MODE

AMP

-

+

FB

AGND

V

REF

OSC

OVP

OTP

SCP

PGND

Operation

value. When VINis greater than VOUT, the device operates

in Buck mode. When VINis lower than VOUT, the device

operates in Boost mode. When VINis close to VOUT, the

RT6158H automatically enters Buck or Boost mode. In

that case, the converter will maintain the regulation for

output voltage and keep a minimum current ripple in the

inductor to guarantee good performance.

The RT6158H is a synchronous current mode constant

on/off time (CMCOT) switching Buck-Boost converter

designed to an adjustable output voltage from an input

supply that can be above, equal, or below the output

voltage. The inductor current is regulated by a fast current

regulator which is controlled by a voltage control loop.

The voltage error amplifier gets its feedback input from

the FB pin. The output voltage of the RT6158H is

adjustable, and can be set by the external divider resistor

©

is a registered trademark of Richtek Technology Corporation.

DS6158H-00 March 2017

www.richtek.com

3

RT6158H

Absolute Maximum Ratings (Note 1)

 Supply Input Voltage ---------------------------------------------------------------------------------------------------- −0.3V to 6V

 LX1, LX2 ------------------------------------------------------------------------------------------------------------------- −0.3V to 6V

< 20ns ---------------------------------------------------------------------------------------------------------------------- −3V to 8.5V

 Other Pins ----------------------------------------------------------------------------------------------------------------- −0.3V to 6V

 Power Dissipation, P_D@ T_A= 25°C

WL-CSP-25B 2.07x2.33 (BSC) --------------------------------------------------------------------------------------- 2.8W

 Package Thermal Resistance (Note 2)

WL-CSP-25B 2.07x2.33 (BSC), θ_JA--------------------------------------------------------------------------------- 35.7°C/W

 Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------------------- 260°C

 Junction Temperature --------------------------------------------------------------------------------------------------- 150°C

 Storage Temperature Range ------------------------------------------------------------------------------------------- −65°C to 150°C

 ESD Susceptibility (Note 3)

HBM (Human Body Model) -------------------------------------------------------------------------------------------- 2kV

Recommended Operating Conditions (Note 4)

 Supply Input Voltage ---------------------------------------------------------------------------------------------------- 2.5V to 5.5V

 Junction Temperature Range ------------------------------------------------------------------------------------------ −40°C to 125°C

 Ambient Temperature Range ------------------------------------------------------------------------------------------ −40°C to 85°C

Electrical Characteristics

(V_IN= 3.6V, T_A= 25°C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Input Power Source

Input Voltage Range

2.5

1.2

--

5.5

--

V

Logic Input High Threshold

Logic Input Low Threshold

Under-Voltage Lockout

V_IH

V_IL

0.4

2.25

V_UVLO

2.05

Under-Voltage Lockout

Hysteresis

V_{UVLO_H}

I_SHDN

--

0.1

--

1

7

V

Shutdown Current

V_IN= 3.5V, EN = L

A

Non-switching. V_IN= 4.2V, V_OUT

3.5V, EN = VIN, Mode = VIN

=

Input Quiescent Current

I_QVIN

5

I_LOAD= 0A. V_IN= 4.2V, V_OUT

3.5V, EN = VIN, Mode = VIN

=

Switching Quiescent Current I_QSW

--

8

10

A

Switching Frequency

f_SWCOT

MODE = H, |V_IN- V_OUT| > 1V

MODE = L

--

2

--

MHz

f_SWCCM

Synchronous Switching

Frequency Range

MODE = square wave, 10% < duty

< 90%

f_SWSYNC

2.2

--

2.6

MHz

©

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

4

DS6158H-00 March 2017

RT6158H

Parameter

Symbol

t_{SS_EN}

t_SS

Test Conditions

Min

Typ

Max

Unit

Time from EN goes H to VOUT

starts ramp up

--

1

--

ms

V_IN= 4V, V_OUT= 3.5V,

I_LOAD= 200mA

Soft-Start Time

--

1

2

--

ms

V_IN= 2.5V, V_OUT= 3.5V,

I_LOAD= 200mA

Minimum Off Time

Minimum On Time

FB Voltage

t_{OFF_MIN}

t_{ON_MIN}

--

40

--

ns

CCM operation

0.792 0.8 0.808

V

High Side Switch R_DS(ON)

Low Side Switch R_DS(ON)

R_{DS(ON)_A, D}V_OUT= 5V

R_{DS(ON)_B, C}V_OUT= 5V

12

20

30

m

Output Over-Voltage

Protection

V_OVP

5.3

--

5.6

5.9

--

V

Load Current Threshold, PFM

to PWM

I_{TH_PWM}

V_IN= 3.6V, V_OUT= 3.3V

200

mA

Load Current Threshold,

PWM to PFM

I_{TH_PFM}

T_FAULT

V_IN= 3.6V, V_OUT= 3.3V

--

200

--

mA

FAULT Time

--

40

--

ms

°C

Thermal Shutdown

160

Over-Temperature Protection

Hysteresis

T_{OTP_HYS}

I_CL

--

6

20

6.5

0.6

--

7

°C

A

Inductor Peak Current Limit

Line Regulation

V_IN= 2.5V to 5.5V, V_OUT= 3.5V,

CCM, I_LOAD= 1.5A

--

%

V_IN= 2.5V to 5.5V, V_OUT= 3.5V,

CCM operation, I_LOAD< 3A

Load Regulation

Output Voltage Ripple

Line Transient

--

0.6

20

--

%

V_OUTp-to-p

V_IN= 2.5V to 5.5V, I_LOAD> 1A

mV

V_IN= 3V to 3.6V at 10s, V_OUT

=

100

3.5V, I_LOAD= 1A

V_IN= 3.4V, V_OUT= 3.5V, Loading =

0.5A to 1A at 1s

Load Transient

--

±60

--

mV

Note 1. Stresses beyond those listed “Absolute Maximum Ratings” may cause permanent damage to the device. These are

stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in

the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may

affect device reliability.

Note 2. θ_JAis measured under natural convection (still air) at T_A= 25°C with the component mounted on a high effective-

thermal-conductivity four-layer test board on a JEDEC 51-7 thermal measurement standard.

Note 3. Devices are ESD sensitive. Handling precaution is recommended.

Note 4. The device is not guaranteed to function outside its operating conditions.

©

is a registered trademark of Richtek Technology Corporation.

DS6158H-00 March 2017

www.richtek.com

5

RT6158H

Typical Operating Characteristics

Efficiency

Load Regulation

100

3.0

2.5

2.0

1.5

1.0

0.5

0.0

-0.5

-1.0

85

70

4.2V

3.8V

3.5V

3.0V

V_IN= 4.2V

V_IN= 3.8V

V_IN= 3.5V

55

V_IN= 3.0V

V_OUT= 3.5V

1000 10000

V_OUT= 3.5V

1

40

0.00001 0.0001 0.001

0.01

0.1

10

1

10

100

Output Current (mA)

Load Current (A)

Line Regulation

V_OUTRipple Voltage

3.64V

3.62V

3.60V

3.58V

3.56V

3.54V

3.52V

3.50V

V_OUT

(50mV/Div)

0.0A

LX1

(4V/Div)

LX2

(5V/Div)

I_OUT

(500mA/Div)

X = IOUT,

Y = VOUT

(50mV/Div)

0.1A

0.5A

1.5A

3.0A

V_IN= 3V, V_OUT= 3.5V, I_OUT= 0A to 3A

Time (4ms/Div)

V_OUT= 3.5V

5.0 5.5

2.5

3.0

3.5

4.0

4.5

Input Voltage (V)

V_OUTRipple Voltage

Load Transient

V_OUT

(430mV/Div)

V_OUT

(50mV/Div)

LX1

V_IN= 3.6V, V_OUT= 3.5V,

t_R= t_F= 1μs, I_OUT= 0A to 3A

(4V/Div)

LX2

(5V/Div)

I_OUT

(500mA/Div)

X = IOUT,

Y = VOUT

(50mV/Div)

I_OUT

(1A/Div)

V_IN= 4.5V, V_OUT= 3.5V, I_OUT= 0A to 3A

Time (4ms/Div)

Time (75μs/Div)

©

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

6

DS6158H-00 March 2017

RT6158H

Line Transient

Shutdown Current

1.0

0.8

0.6

0.4

0.2

0.0

V_OUT= 3.5V, EN = 0

V_IN

(500mV/Div)

TC = 85°C

TC = 25°C

TC = −40°C

V_OUT

(50mV/Div)

V_IN= 3V to 3.6V, V_OUT= 3.5V, I_OUT= 1A

2.5

3.0

3.5

4.0

4.5

5.0

5.5

Time (200μs/Div)

Input Voltage (V)

Switching Quiescent Current

Maximum Output Current

10

9

4.4

4.1

3.8

3.5

3.2

2.9

2.6

8

7

6

V_OUT= 3.5V

3.8 4.0 4.2

5

3.6

4.0

4.4

4.8

5.2

5.6

2.8

3.0

3.2

3.4

3.6

Input Voltage (V)

Power On

Power Off

V_IN= 3.6V, V_OUT= 3.5V, I_OUT= 3A

V_EN

(2V/Div)

V_EN

(2V/Div)

V_OUT

(1V/Div)

I_LX

(1V/Div)

V_OUT

(1V/Div)

I_LX

(1V/Div)

Time (200μs/Div)

Time (40μs/Div)

©

is a registered trademark of Richtek Technology Corporation.

DS6158H-00 March 2017

www.richtek.com

7

RT6158H

Application Information

maintain high efficiency. When the load increases, the

device will automatically switch to PWM mode. The PFM

mode can be disabled by programming the MODE pin

low. Connecting a clock signal at MODE pin can force

the RT6158H switching frequency to synchronize to the

connected clock frequency. The MODE pin input supports

standard logic thresholds and the frequency range is

between 2.2MHz to 2.6MHz. This input must not be left

floating and must be terminated.

The RT6158H Buck-BoostDC-DC converter can operate

with wide input voltage such as battery which is higher or

lower than the output voltage and it can supply the load

current up to 3A. The maximum peak current in the

switches is limited to a typical value of 6.5A. The typical

operating input voltage is between 2.5V and 5.5V. The

RT6158H output voltage can be set from 2.1V to 5.2V by

changing the external divider resistor on the FB pin. The

converter feedback loop is internally compensated for both

Buck and Boost operation and it provides seamless

transition between Buck and Boost modes operation.

Under-Voltage Lockout

The under-voltage lockout circuit prevents the device from

operating incorrectly at low input voltages. It prevents the

converter from turning on the power switches under

undefined conditions and prevents the battery from deep

discharge. VINvoltage must be greater than 2.5V to enable

the converter.During operation, if VINvoltage drops below

1.8V, the converter is disabled until the supply exceeds

the UVLO rising threshold. The RT6158H automatically

restarts if the input voltage recovers to the input voltage

UVLO high level.

Enable

The device can be enabled or by the EN pin. When the

ENpin is higher than the threshold of logic high, the device

starts operation with soft-start. Once the EN pin is set at

low, the device will be shut down. In shutdown mode, the

converter stops switching, internal control circuitry is turned

off, and the load is disconnected from the input. This also

means that the output voltage can drop below the input

voltage during shutdown. This input must not be left

floating and must be terminated.

Short Circuit Protection

Output Voltage Setting

When the output is shorted to ground, the inductor current

decays very slowly rate during a single switching cycle.

A current runaway detector is used to monitor inductor

current.As current increasing beyond the control of current

loop, switching cycles will be skipped to prevent current

runaway form occurring.

The RT6158H output voltage can be set from 2.1V to 5.2V

by changing the external divider resistor on the FB pin.

The resistor divider must be connected between VOUT,

FB and GND. The typical value of the voltage at the FB

pin is 800mV. For decrease the leakage current on FB

pin, it is recommended to keep the resistor R2 large value.

For example, it can be R1 = 1MΩ and R2 = 294kΩ for

V_OUT= 3.5V application, the following Equation is as

below :

Over-Temperature Protection

The device has a built-in temperature sensor which

monitors the internal junction temperature. If the

temperature exceeds a threshold, the device stops

operating. As soon as the IC temperature decreases below

the threshold with a hysteresis, it starts operating again.

V

V_FB











OUT

R1 = R2 

 1



MODE states and Synchronization

Over-Voltage Protection

The MODE pin can be used to select different operation

modes. When MODE is set high, it means the RT6158H

will operate at PFM mode for used to improve efficiency.

At this point the converter operates with reduced switching

frequency and with a minimum quiescent current to

When the VOUTS pin is floating, the device will trigger

the over-voltage protection to avoid the output voltage

exceeding critical values for device. In case it reaches the

OVP threshold, the device will regulate the output voltage

to this value.

©

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

8

DS6158H-00 March 2017

RT6158H

Protection

Type

Threshold Refer

to Electrical spec.

Protection Method

Shut Down Delay Time

Reset Method

CL will trigger right

away.

OCP

I_L> 6.5A

Turn on B, D MOS

I_L< 6.5A

UVP

OTP

V_IN< 1.9V

Shutdown

100s

V_IN> 2.3V

TEMP > 160°C

Shutdown

No delay

OTP Hysteresis = 20°C

V_OUT< 5.3V

Output OVP V_OUT> 5.6V

SCP V_OUT< 1.2V

Stop switching

f_SWbecome 1/4

After FAULT 40ms

Inductor Selection

ripple. Larger capacitors will cause lower output voltage

ripple as well as lower output voltage drop during load

transients.

The recommended power inductor is 1μH with over 6.5A

saturation current rating. In applications, need to select

an inductor with the lowDCR to provide good performance

and efficiency.

Thermal Considerations

The junction temperature should never exceed the

absolute maximum junction temperature T_J(MAX), listed

under Absolute Maximum Ratings, to avoid permanent

damage to the device. The maximum allowable power

dissipation depends on the thermal resistance of the IC

package, the PCB layout, the rate of surrounding airflow,

and the difference between the junction and ambient

temperatures. The maximum power dissipation can be

calculated using the following formula :

Input and Output Capacitor Selection

The input and output capacitors should be ceramic X5R

type with low ESL and ESR. The recommended input

capacitor value is 2 x 10μF. The recommended output

capacitor value is 2 x 22μF.

The output capacitor selection determines the output

voltage ripple and transient response. It is recommended

to use ceramic capacitors placed as close as possible to

the VOUT and GND pins of the IC. If, for any reason, the

application requires the use of large capacitors which

cannot be placed close to the IC, using a small ceramic

capacitor in parallel to the large one is recommended.

This small capacitor should be placed as close as possible

to the VOUT and GND pins of the IC. The output voltage

ripple for a given output capacitor is expressed as follows:

P_D(MAX)= (T_J(MAX)− T_A) / θ_JA

where T_J(MAX)is the maximum junction temperature, T_Ais

the ambient temperature, and θ_JAis the junction-to-ambient

thermal resistance.

For continuous operation, the maximum operating junction

temperature indicated under Recommended Operating

Conditions is 125°C. The junction-to-ambient thermal

resistance, θ_JA, is highly package dependent. For a WL-

CSP-25B 2.07x2.33 (BSC) package, the thermal

resistance, θ_JA, is 35.7°C/W on a standard JEDEC 51-7

high effective-thermal-conductivity four-layer test board.

The maximum power dissipation at T_A= 25°C can be

calculated as below :

If the RT6158H operates in Buck mode, the worst-case

voltage ripple occurs at the highest input voltage. When

the Buck-boost operates in Boost mode, the worst-case

voltage ripple occurs at the lowest input voltage. The

maximum voltage of overshoot or undershoot, is inversely

proportional to the value of the output capacitor. For surface

mount applications, Taiyo Yuden or TDK ceramic

capacitors, X7R series Multi-layer Ceramic Capacitor is

recommended.Acapacitor with a value in the range of the

calculated minimum should be used. This is required to

maintain control loop stability. There are no additional

requirements regarding minimum ESR. Low ESR

capacitors should be used to minimize output voltage

P_D(MAX)= (125°C − 25°C) / (35.7°C/W) = 2.8W for a WL-

CSP-25B 2.07x2.33 (BSC) package.

The maximum power dissipation depends on the operating

ambient temperature for the fixed T_J(MAX)and the thermal

resistance, θ_JA. The derating curves in Figure 1 allows

the designer to see the effect of rising ambient temperature

on the maximum power dissipation.

©

is a registered trademark of Richtek Technology Corporation.

DS6158H-00 March 2017

www.richtek.com

9

RT6158H

4.0

3.6

3.2

2.8

2.4

2.0

1.6

1.2

0.8

0.4

0.0

Layout Considerations

Four-Layer PCB

Some PCB layout guidelines for optimal performance of

the RT6158H list as following. Following figure shows the

real PCB layout considerations and it is based on the real

component size whose unit is millimeter (mm).

 The input capacitor should be placed as closed as

possible to PVIN pin for good filtering.

 The high current path should be made as short and wide

as possible.

 The inductor should be placed as close to LX1 and LX2

0

25

50

75

100

125

pin for reducing EMI.

Ambient Temperature (°C)

Figure 1.Derating Curve of Maximum PowerDissipation

 The output capacitor should be placed as closed as

PGNDpin to ground plane to reduce noise coupling.

TOP Layer

Inner Layer1

Inner Layer2

0201R

Bottom Layer

AVIN

PVIN

EN

AGND

MODE

AGND

LX2

FB

VOUT

LX1

VIN

VOUT

PVIN

LX1

PGND

LX2

VOUT

PVIN

LX1

PGND

LX2

2520L

Figure 2. PCB LayoutGuide

©

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

10

DS6158H-00 March 2017

RT6158H

Outline Dimension

Dimensions In Millimeters

Dimensions In Inches

Symbol

Min

0.500

0.170

0.240

2.280

Max

0.600

0.230

0.300

2.380

Min

0.020

0.007

0.009

0.090

Max

0.024

0.009

0.012

0.094

A

A1

b

D

D1

E

1.600

0.063

2.020

2.120

0.080

0.083

E1

e

1.600

0.400

0.063

0.016

25B WL-CSP 2.07x2.33 Package (BSC)

©

is a registered trademark of Richtek Technology Corporation.

DS6158H-00 March 2017

www.richtek.com

11

RT6158H

Footprint Information

Footprint Dimension (mm)

Number of

Package

Type

Tolerance

±0.025

e

A

B

NSMD

SMD

0.240

0.270

0.340

0.240

WL-CSP2.07*2.33-25(BSC)

25

0.400

Richtek Technology Corporation

14F, No. 8, Tai Yuen 1^stStreet, Chupei City

Hsinchu, Taiwan, R.O.C.

Tel: (8863)5526789

Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. Customers should

obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot

assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be

accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of third

parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Richtek or its subsidiaries.

www.richtek.com

12

DS6158H-00 March 2017


型号：	RT6158H
厂家：	RICHTEK TECHNOLOGY CORPORATION
描述：	High Efficiency, Low Quiescent, 3A Buck-Boost Converter
文件：	总12页 (文件大小：311K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

RT6158H [RICHTEK]

相关型号：

RT6158HWSC

RT61619PN

RT61619PW

RT61619PX

RT61619SN

RT61619SW

RT61619SX

RT61819PN

RT61819PW

RT61819PX

RT61819SN

RT61819SW