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參數資料
型號: FAN5236MTC
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 穩壓器
英文描述: Dual Mobile-Friendly DDR / Dual-output PWM Controller
中文描述: DUAL SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO28
封裝: MO-153-AB, TSSOP-28
文件頁數: 3/20頁
文件大小: 199K
代理商: FAN5236MTC
FAN5236
PRODUCT SPECIFICATION
REV. 1.1.7 4/4/03
3
Pin Configurations
Pin Definitions
Pin
Number
1
Pin Name
AGND
Pin Function Description
Analog Ground.
measured with respect to this pin.
Low-Side Drive.
The low-side (lower) MOSFET driver output. Connect to gate of low-side
MOSFET.
Power Ground.
The return for the low-side MOSFET driver. Connect to source of low-
side MOSFET.
Switching node.
Return for the high-side MOSFET driver and a current sense input.
Connect to source of high-side MOSFET and low-side MOSFET drain.
High-Side Drive.
High-side (upper) MOSFET driver output. Connect to gate of high-side
MOSFET.
BOOT.
Positive supply for the upper MOSFET driver. Connect as shown in Figure 3.
This is the signal ground reference for the IC. All voltage levels are
2
27
3
26
4
25
5
24
6
23
7
22
8
21
LDRV1
LDRV2
PGND1
PGND2
SW1
SW2
HDRV1
BOOT1
BOOT2
ISNS1
ISNS2
EN1
EN2
Current Sense input.
sense resistor for current feedback.
Enable
. Enables operation when pulled to logic high. Toggling EN will also reset the
regulator after a latched fault condition. These are CMOS inputs whose state is
indeterminate if left open.
Forced PWM mode.
When logic low, inhibits the regulator from entering hysteretic mode.
Otherwise tie to VOUT. The regulator uses VOUT on this pin to ensure a smooth
transition from Hysteretic mode to PWM mode. When VOUT is expected to exceed VCC,
tie to VCC.
Output Voltage Sense.
The feedback from the outputs. Used for regulation as well as
PG, under-voltage and over-voltage protection and monitoring.
Current Limit 1.
A resistor from this pin to GND sets the current limit.
Soft Start.
A capacitor from this pin to GND programs the slew rate of the converter
during initialization. During initialization, this pin is charged with a 5
DDR Mode Control.
High = DDR mode. Low = 2 separate regulators operating 180° out
of phase.
Monitors the voltage drop across the lower MOSFET or external
9
20
FPWM1
FPWM2
10
19
11
12
17
13
VSEN1
VSEN2
ILIM1
SS1
SS2
DDR
μ
A current source.
AGND
LDRV1
PGND1
SW1
HDRV1
BOOT1
ISNS1
EN1
FPWM1
VSEN1
ILIM1
SS1
DDR
VIN
FAN5236
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VCC
LDRV2
PGND2
SW2
HDRV2
BOOT2
ISNS2
EN2
FPWM2
VSEN2
ILIM2/REF2
SS2
PG2/REF2OUT
PG1
QSOP-28 or TSSOP-28
θ
JA
= 90
°
C/W
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相關代理商/技術參數
參數描述
FAN5236MTC_Q 功能描述:開關變換器、穩壓器與控制器 DC/DC RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
FAN5236MTCX 功能描述:開關變換器、穩壓器與控制器 PWM Controller RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
FAN5236QSC 功能描述:開關變換器、穩壓器與控制器 DC/DC RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
FAN5236QSC_Q 功能描述:開關變換器、穩壓器與控制器 DC/DC RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
FAN5236QSCX 功能描述:開關變換器、穩壓器與控制器 PWM Controller RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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