cisco 1700 series AP can be used as both (with or without WLC).
1830 or 1850 comes as Mobility Express solution:
Info:
Mobility Express integrates wireless LAN (WLAN) controller functions into the Cisco Aironet ® 1850 and 1830 Series Access Points. As such, Mobility Express is the latest in a series of Cisco efforts to turn WLAN controllers into a software function that any network component can host. Cisco controller capabilities also can be housed in standalone appliances (Cisco Wireless LAN Controllers, or WLCs), Cisco switches, Cisco routers, a private cloud, and a public cloud.
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