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Si9139

Features: · Five Output 50-W, Triple Output DC-DC-Controller· Up to 95% Efficiency· ±3% Total Regulation (Line, Load and Temperature)· 4.5-V to 30-V Input Voltage Range· Two Fixed 1.5-V, 1.8-V, 2.0-V, 2.2-V, 2.5-V, 2.8-V, 3.3-V Outputs· One Adjustable 1.24-V to 20-V Output· 3.3-V Reference Output·...

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SeekIC No. : 004490903 Detail

Si9139: Features: · Five Output 50-W, Triple Output DC-DC-Controller· Up to 95% Efficiency· ±3% Total Regulation (Line, Load and Temperature)· 4.5-V to 30-V Input Voltage Range· Two Fixed 1.5-V, 1.8-V, 2.0-...

Si9139 Data Sheet

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Part Number:
Si9139
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· Five Output 50-W, Triple Output DC-DC-Controller
· Up to 95% Efficiency
· ±3% Total Regulation (Line, Load and Temperature)
· 4.5-V to 30-V Input Voltage Range
· Two Fixed 1.5-V, 1.8-V, 2.0-V, 2.2-V, 2.5-V, 2.8-V, 3.3-V Outputs
· One Adjustable 1.24-V to 20-V Output
· 3.3-V Reference Output
· 5-V/30-mA Linear Regulator Output
· Individual ON/OFF Control for A and B Outputs
· 300-kHz Low-Noise Fixed Frequency Operation
· High Efficiency Pulse Skipping Mode Operation at Light Load
· Only Three Inductors RequiredNo Transformer
· LITTLE FOOT® Optimized Output Drivers
· Internal Under Voltage Lockout and Soft-Start
· Minimum Number of External Control Components
· 28-Pin SSOP Package
· Output Overvoltage Protection
· Output Undervoltage Shutdown
· Power-Good Output(RESET)




Application

· Notebook and Subnotebook Computers
· PDAs and Mobile Communicators
· Portable Display
· Multimedia Set-Top Box
· Telecommunications Infrastructure
· Network Equipment
· Distributed Power Conversion




Pinout

Connection Diagram




Specifications

VIN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +36 V
PGND to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±2 V
VL to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.5 V
BSTA, BSTB, BSTC to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to +36 V
VL Short to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
LXA to BSTA; LXB to BSTB; LXC to BSTC . . . . . . . . . . . . . . . . . -6.5 V to 0.3 V
Inputs/Outputs to GND
(CSA, CSB, CSP, CSN) . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to (VL +0.3 V)
RESET, ONA, ONB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to +5.5 V
DLA, DLB, DLC to PGND . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to (VL +0.3 V)
DHA to LXA, DHB to LXB,
DHC to LXC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to (BSTx +0.3 V)
Continuous Power Dissipation (TA = 70)a
28-Pin SSOPb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 762 mW
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . -40 to 85
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to 125
Lead Temperature (Soldering, 10 Sec.) . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Notes
a. Device mounted with all leads soldered or welded to PC board.
b. Derate 9.52 mW/ above 70.




Description

The Si9139 is current-mode PWM and PSM converter controller, with two high current, high efficiency synchronous buck controllers and an adjustable buck-boost controller whose output can be set between 1.24 V and 20 V with an external resistor divider. Designed for fixed and portable devices, it offers a total of five power outputs (three tightly regulated dc/dc converter outputs, a precision 3.3-V reference and a 5-V LDO output. Individually controlled power-up sequencing, power-good signal with delay, internal frequency compensation networks and automatic boot-strapping simplify the system by minimizing the number of external components while achieving conversion efficiencies approaching 95%.

The Si9139 is available in a 28-pin SSOP package and specified to operate over the extended commercial (-40 to 85) temperature range.






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