IC-Hersteller ROHM

IC-Hersteller (95)

ROHM BD83070GWL | Demoboard BD83070GWL Evaluation Board

synchronous buck-boost DC/DC converter

Details

TopologieAbwärts- und Aufwärtswandler
Eingangsspannung2-5.5 V
Schaltfrequenz1350-1650 kHz
Ausgang 12.53 V / 1 A
Ausgang 23.33 V / 1 A
IC-Revision001

Beschreibung

The BD83070GWL is a synchronous buck-boost DC/DC convertor providing 3.3 V or 2.5 V output from single-cell Li-ion battery or other input between 2.0 V and 5.5 V. It has the capability to support up to 1 A output over input voltage range of 2.7 V to 5.5 V. It seamlessly changes between buck and boost operations depending on the input voltage. It is based on pulse width modulation (PWM) and provides high efficiency for heavy load. While in PWM operation, internal FETs switch at fixed frequency 1.5 MHz typical. It automatically changes over control system to hysteresis pulse frequency modulation (PFM) to suppress switching loss and current consumption during light load. Battery drain fall down to only 2.8 μA typical at no load current. It is possible to disable auto-PFM/PWM mode by the MODE pin for suppressing output ripple and fixed frequency switching. The device is packaged in a 1.2 mm x 1.6 mm WLCSP package.

Eigenschaften

  • Automatic PFM/PWM Transition
  • Output Current: Up To 1 A (VIN > 2.7 V, VOUT = 3.3 V)
  • Selectable Output Voltage: 2.5 V or 3.3 V
  • Efficiency: Up To 95 %
  • UVLO Detection:1.61 V(Max)
  • Built-in Thermal, Over Voltage, And Over Current Protection

Typische Anwendungen

  • Single Cell Li-ion or 3 Cell NiMH Battery-Powered Portable Products / Tablet Terminal Device / Smartphone

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT1
(A)
ISAT2
(A)
RDC max.
(mΩ)
fres
(MHz)
VersionISAT
(A)
IRP,40K
(A)
ISAT,30%
(A)
RDC typ.
(mΩ)
V
(V)
Montageart Muster
74438343015SPEC
9 Dateien WE-MAPI SMT-Speicherdrossel 1.5 1.3 180 85 SMT 3 2.05 3.95 150 80 SMT
74438323015SPEC
9 Dateien WE-MAPI SMT-Speicherdrossel 1.5 1.8 110 65 SMT 3.5 2.85 4.75 92 80 SMT
74438324015SPEC
9 Dateien WE-MAPI SMT-Speicherdrossel 1.5 2.2 99 60 SMT 3.7 3.05 4.7 82 80 SMT
74479288215SPEC
8 Dateien WE-PMCI Power Molded Chip Induktivität 1.5 4.25 1.35 3.05 77 70 Standard 4 4.25 SMT
74405024015SPEC
9 Dateien WE-LQSH SMT Semi-Shielded High Saturation Power Inductor 1.5 2.1 72 68 3.5 SMT
74405020015SPEC
8 Dateien WE-LQSH SMT Semi-Shielded High Saturation Power Inductor 1.5 1.4 132 74 2.3 SMT
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT1
(A)
ISAT2
(A)
RDC max.
(mΩ)
fres
(MHz)
VersionISAT
(A)
IRP,40K
(A)
ISAT,30%
(A)
RDC typ.
(mΩ)
V
(V)
Montageart Muster