Data Sheet

WL1801MOD,
WL1805MO
D
,
WL1831MO
D
,
WL1835MOD
SWRS152M – JULY 2013 – REVISED OCTOBER 2017
www.ti.com
Specifications 17
Copyright © 2013–2017, Texas Instruments Incorporated
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WL1835MOD
Bluetooth BR and EDR Dynamic Currents (continued)
Current is measured at output power as follows: BR at 11.7 dBm; EDR at 7.2 dBm.
USE
CASE
(1) (2)
TYP UNIT
Full throughput EDR ACL TX:
TX-2DH5
(4)
33.0 mA
Page scan or inquiry scan (scan interval is 1.28 s or 11.25 ms, respectively)
253.0
µ
A
Page scan and inquiry scan (scan interval is 1.28 s and 2.56 s, respectively)
332.0
µ
A
5.18 Bluetooth low energy Currents
All current measured at output power of 7.0 dBm
USE
CASE
(1)
TYP UNIT
Advertising, not
connectable
(2)
131 µ
A
Advertising, discoverable
(2)
143 µ
A
Scanning
(3)
266 µ
A
Connected, master role, 1.28-s connect
interval
(4)
124 µ
A
Connected, slave role, 1.28-s connect interval
(4)
132 µ
A
(1) CL1p% PA is connected to V
BAT
, 3.7 V.
(2) Advertising in all three channels, 1.28-s advertising interval, 15 bytes advertise data
(3) Listening to a single frequency per window, 1.28-s scan interval, 11.25-ms scan window
(4) Zero slave connection latency, empty TX and RX LL packets
5.19 Timing and Switching Characteristics
5.19.1 Power Management
5.19.1.1 Block Diagram – Internal DC-DCs
The device incorporates three internal DC-DCs (switched-mode power supplies) to provide efficient
internal supplies, derived from V
BAT
.
V
IO
V
BAT
VIO_IN
VBAT_IN_MAIN_DC2DC
VBAT_IN_PA_DC2DC
V
BAT
WL18xx Top
Level
V
BAT
MAIN_DC2DC_OUT
SW
SW
PA_DC2DC_OUT
PA
LDO_IN_DIG
FB
Main
DC2DC
DC2DC
FB
FB_IN_PA_DC2DC
1.8 V
2.2 – 2.7
V
DIG_DC2DC_OUT
VDD_DIG
SW
FB
Digital
DC2DC
1
V
Figure 5-1. Internal DC-DCs
5.19.2 Power-Up and Shut-Down States
The correct power-up and shut-down sequences must be followed to avoid damage to the device.
While V
BAT
or V
IO
or both are deasserted, no signals should be driven to the device. The only exception is
the slow clock that is a fail-safe I/O.
While V
BAT
, V
IO
, and slow clock are fed to the device, but WL_EN is deasserted (low), the device is in
SHUTDOWN state. In SHUTDOWN state all functional blocks, internal DC-DCs, clocks, and LDOs are
disabled.