NX9548ILQ-TR

NX9548ILQ-TR Datasheet

NX9548

Part	Datasheet
NX9548ILQ-TR	NX9548ILQ-TR (pdf)

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NX9548 7A SINGLE CHANNEL MOBILE PWM SWITCHING REGULATOR TARGET SPECIFICATION Pb Free Product The NX9548 is buck switching converter in multi chip Boost Schottky Diode module designed for step down DC to DC converter in mode operation available portable applications. It is optimized to convert single Bus voltage operation from 4.5V to 20V supply up to 20V bus voltage to as low as 0.75V Less than 1uA shutdown current with Enable low voltage.The output current can be up to 7A. It can be Excellent dynamic response with constant on time selected to operate in synchronous mode or non-syn- control chronous mode to improve the efficiency at light load. between Synchronous CCM mode and Constant on time control provides fast response, good diode emulation mode to improve efficiency at light line regulation and nearly constant frequency under wide load voltage input range. Over current protection and FB switching frequency followed by latch feature. Other features includes Current limit and FB UVLO with latch off nal boost schottky diode, 5V gate drive capabilit,ypower Over voltage protection with latch off good indicator, over current protection, over voltage pro- tection and adaptive dead band control.NX9548 is able in 5x5 MCM package. UMPC, Notebook PCs and Desknotes Tablet PCs/Slates On board DC to DC such as 12V to 3.3V, 2.5V or 1.8V Hand-held portable instruments NX9 5 48 PGOOD 5V PGOOD 100k PVCC 10 VCC ENSW /MODE TON D1 1M 1n 1u S1 D2 10k OCP VIN 8V~20V 2x10uF 3.3uH Vout 1.5V/7A 2R5TPE330MC 330uF HG HDRV VOUT FB 330p 7.5k 7.5k Figure 1 -Typical application of 9548 ORDERING INFORMATION Device NX9548CMTR Temperature 0 to 70oC Package 5X5 MCM-32L Pb-Free Yes NX9548 ABSOLUTE MAXIMUM RATINGS VCC,PVCC to GND & BST to SW voltage -0.3V to 6.5V TON to GND -0.3V to 28V HDRV to SW Voltage -0.3V to 6.5V D1 to S1and D2 to S2 30V All other pins -0.3V to VCC+0.3V or 6.5V Storage Temperature Range -65oC to 150oC Operating Junction Temperature Range -40oC to 125oC ESD Susceptibility 2kV Power Dissipation Internally Limited by OTP CAUTION Stresses above those listed in "ABSOLUTE MAXIMUM RATINGS", may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. PACKAGE INFORMATION 32-LEAD PLASTIC MCM 5 x 5 D1 HG GND PGOOD FB VCC 32 31 30 29 28 27 26 25 24 TON S1 2 S1 3 D1 PAD2 GND PAD1 23 VOUT 22 ENSW/MODE 21 GND 20 BST D2 6 D2 7 D2 8 D2 PAD3 19 D2 18 HDRV 17 NC 9 10 11 12 13 14 15 16 S2 PVCC OCP 03/06/12 NX9548 ELECTRICAL SPECIFICATIONS Unless otherwise specified, these specifications apply over Vcc = 5,VVIN = 12V andTA= 0 to 70oC. Typical values refer to TA = 25oC. Low duty cycle pulse testing is used which keesp junction and case temperatures equal to the ambient temperature. P ARAM ET ER VIN recommended voltage range Shut down current VCC,PVCC Supply Input voltage range Operating quies cent c urrent Shut down current VCC UVLO Under-voltage Loc kout t hres hold Falling V CC threshold ON a nd OFF tim e TON operating c urrent ON -time Minimum off time FB volta ge Internal FB voltage Input bias c urrent Line regulation OUTPUT volta ge Output range VOUT shut down discharge res is t anc e Soft start time PGOOD high rising threshold PGOOD delay after s oftstart PGOOD propagation delay filter PGOOD hy steresis PGOOD output switch impedance PGOOD leakage current ENSW /MODE th re shold and bias current Te st Condition ENSW =GND V in FB=0.85V, ENSW =5V EN= SW GND V C _UV LO VIN= 15V, Rton= 1Mohm V = IN 9V,V= OUT 0.75V,Rton

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NX9548
7A SINGLE CHANNEL MOBILE PWM SWITCHING REGULATOR

TARGET SPECIFICATION

Pb Free Product

The NX9548 is buck switching converter in multi chip Boost Schottky Diode module designed for step down DC to DC converter in mode operation available portable applications. It is optimized to convert single Bus voltage operation from 4.5V to 20V supply up to 20V bus voltage to as low as 0.75V Less than 1uA shutdown current with Enable low voltage.The output current can be up to 7A. It can be Excellent dynamic response with constant on time
selected to operate in synchronous mode or non-syn- control chronous mode to improve the efficiency at light load. between Synchronous CCM mode and

Constant on time control provides fast response, good diode emulation mode to improve efficiency at light
line regulation and nearly constant frequency under wide load voltage input range. Over current protection and FB switching frequency followed by latch feature. Other features includes Current limit and FB UVLO with latch off nal boost schottky diode, 5V gate drive capabilit,ypower Over voltage protection with latch off
good indicator, over current protection, over voltage pro-
tection and adaptive dead band control.NX9548 is
able in 5x5 MCM package.

UMPC, Notebook PCs and Desknotes Tablet PCs/Slates On board DC to DC such as
12V to 3.3V, 2.5V or 1.8V Hand-held portable instruments

NX9 5 48

PGOOD 5V

PGOOD
100k

PVCC
10 VCC

ENSW /MODE

TON D1
1M 1n
1u S1 D2
10k OCP

VIN 8V~20V 2x10uF
3.3uH

Vout 1.5V/7A 2R5TPE330MC
330uF

HG HDRV

VOUT FB
330p
7.5k 7.5k

Figure 1 -Typical application of 9548
ORDERING INFORMATION

Device NX9548CMTR

Temperature 0 to 70oC

Package 5X5 MCM-32L

Pb-Free Yes

NX9548

ABSOLUTE MAXIMUM RATINGS

VCC,PVCC to GND & BST to SW voltage -0.3V to 6.5V TON to GND -0.3V to 28V HDRV to SW Voltage -0.3V to 6.5V D1 to S1and D2 to S2 30V All other pins -0.3V to VCC+0.3V or 6.5V Storage Temperature Range -65oC to 150oC Operating Junction Temperature Range -40oC to 125oC ESD Susceptibility 2kV Power Dissipation Internally Limited by OTP

CAUTION Stresses above those listed in "ABSOLUTE MAXIMUM RATINGS", may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

PACKAGE INFORMATION
32-LEAD PLASTIC MCM 5 x 5

D1 HG GND PGOOD FB VCC
32 31 30 29 28 27 26 25
24 TON

S1 2 S1 3

D1 PAD2

GND PAD1
23 VOUT 22 ENSW/MODE
21 GND
20 BST

D2 6 D2 7 D2 8

D2 PAD3
19 D2 18 HDRV 17 NC
9 10 11 12 13 14 15 16

S2 PVCC OCP
03/06/12

NX9548

ELECTRICAL SPECIFICATIONS

Unless otherwise specified, these specifications apply over Vcc = 5,VVIN = 12V andTA= 0 to 70oC. Typical values refer to TA = 25oC. Low duty cycle pulse testing is used which keesp junction and case temperatures equal to the ambient temperature.

P ARAM ET ER

VIN recommended voltage range

Shut down current

VCC,PVCC Supply Input voltage range

Operating quies cent c urrent

Shut down current VCC UVLO Under-voltage Loc kout t hres hold Falling V CC threshold ON a nd OFF tim e TON operating c urrent

ON -time Minimum off time FB volta ge Internal FB voltage Input bias c urrent Line regulation OUTPUT volta ge Output range VOUT shut down discharge res is t anc e Soft start time PGOOD high rising threshold PGOOD delay after s oftstart PGOOD propagation delay filter PGOOD hy steresis PGOOD output switch impedance PGOOD leakage current ENSW /MODE th re shold and bias current

Te st Condition

ENSW =GND

V in FB=0.85V, ENSW =5V EN= SW GND

V C _UV LO

VIN= 15V, Rton= 1Mohm V = IN 9V,V= OUT 0.75V,Rton

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Datasheet ID: NX9548ILQ-TR 648178