User's Manual
Table Of Contents
- General Description
- Benefits
- Overview
- Pad Connection Interface
- Recommended Host PCB Layout
- Module Connections
- Bluetooth Baseband Core
- Power Management Unit
- Microprocessor Unit
- Integrated Radio Transceiver
- Peripheral Transport Unit
- ADC Port
- PWM
- Triac Control
- Security Engine
- Electrical Characteristics
- RF Specifications
- Timing and AC Characteristics
- Environmental Specifications
- Regulatory Information
- Packaging
- Ordering Information
- Acronyms
- Document Conventions
- Document History Page
- Sales, Solutions, and Legal Information
Document Number: 002-19043 Rev. PRELIMINARY Page 18 of 33
PRELIMINARY
CYBLE-413136-01
Core Buck Regulator
n Minimum capacitor value refers to residual capacitor value after taking into account part-to-part tolerance, DC-bias, temperature,
and aging.
n Maximum capacitor value refers to the total capacitance seen at a node where the capacitor is connected. This also includes any
decoupling capacitors connected at the load side, if any.
Table 10. Core Buck Regulator (Internal to Module)
Parameter Conditions Min. Typ. Max. Unit
Input supply voltage DC, VBAT DC voltage range inclusive of disturbances 2.1 3.3 3.63 V
CBUCK output current LPOM only – – 65 mA
Output over-current limit Peak inductor current TBD – – mA
Output voltage range Programmable, 30mV/step
default = 1.2V (bits=0000)
1.2 1.2 1.5 V
Output voltage DC accuracy Includes load and line regulation:
• Before trimming
• After trimming
–4
–2
–+4
+2
%
%
LPOM ripple voltage, static Measured with 20 MHz bandwidth limit, static load.
Max ripple based on VBAT=3V, Vout=1.2V
Inductor:
0806 inch-size, Tmax=1 mm,
2.2
μH ±25%, DCR=114 mW ±20%, ACR<1W (for
frequency <1 MHz)
Capacitor:
1
μF ±10%, 6.3V, 0603 inch, X5R, MLCC capacitor
+ board total-ESR < 20 mW
– – 30 mVpp
LPOM efficiency (high load) 10–50 mA load current, Vout=1.2V, Vbat=3V
@25°C
Inductor:
0806 inch-size, Tmax=1 mm,
2.2
μH ±25%, DCR=114 mW ±20%, ACR<1W (for
frequency<1 MHz)
Capacitor:
1
μF ±10%, 6.3V, 0603 inch, X5R, MLCC capacitor
+board total-ESR < 20 mW
TBD 85 – %
LPOM efficiency (low load) 1–5 mA load current, Vout=1.2V, Vbat=3V @25°C
Inductor:
0806 inch-size, Tmax=1 mm,
2.2 ?H ±25%, DCR=114 mW ±20%, ACR<1W (for
frequency<1 MHz)
Capacitor:
1
μF ±10%, 6.3V, 0603 inch, X5R, MLCC capacitor
+board total-ESR < 20 mW
TBD 80 – %
Startup time see Table 11 on page 19.––––
External inductor L
2.2
μH ±25%, DCR=114 mW ±20%, ACR<1W (for
frequency<1 MHz)
–2.2–
μH
External output capacitor, Cout
1
μF ±10%, 6.3V, 0603 inch, X5R, MLCC capacitor
+board total-ESR < 20 mW
0.7 1 1.1
μF
External input capacitor, Cin For SR_VDDBAT pin
Ceramic, X5R, 0402, ESR<30 mW at
4 MHz, +/-20%, 6.3V, 4.7
μF
0.7 4.7 5.64
μF
Input supply voltage ramp-up time 0 to 3.3V 40 – –
μs